diff --git a/4_predictive_models.ipynb b/03_predictive_models.ipynb
similarity index 92%
rename from 4_predictive_models.ipynb
rename to 03_predictive_models.ipynb
index 8697a61..ddcb3a2 100644
--- a/4_predictive_models.ipynb
+++ b/03_predictive_models.ipynb
@@ -146,7 +146,7 @@
       "MultiIndex: 2898 entries, (144, 535153070) to (867, 907253130)\n",
       "Columns: 248 entries, 1st Flr SF to SalePrice\n",
       "dtypes: float64(19), int64(229)\n",
-      "memory usage: 5.5 MB\n"
+      "memory usage: 5.7 MB\n"
      ]
     }
    ],
@@ -2720,10 +2720,10 @@
      "output_type": "stream",
      "text": [
       "<class 'pandas.core.frame.DataFrame'>\n",
-      "MultiIndex: 2883 entries, (2775, 907175060) to (2659, 902305090)\n",
+      "MultiIndex: 2883 entries, (2775, 907175060) to (2660, 902325050)\n",
       "Columns: 109 entries, 1st Flr SF to SalePrice (box-cox-0)\n",
       "dtypes: float64(27), int64(82)\n",
-      "memory usage: 2.5 MB\n"
+      "memory usage: 2.6 MB\n"
      ]
     }
    ],
@@ -3097,61 +3097,61 @@
        "      <td>12.287653</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <th>2139</th>\n",
-       "      <th>907202100</th>\n",
-       "      <td>907.0</td>\n",
-       "      <td>6.810142</td>\n",
+       "      <th>2140</th>\n",
+       "      <th>907202220</th>\n",
+       "      <td>879.0</td>\n",
+       "      <td>6.778785</td>\n",
        "      <td>0.0</td>\n",
        "      <td>0.0</td>\n",
        "      <td>3</td>\n",
        "      <td>3</td>\n",
-       "      <td>3</td>\n",
        "      <td>1</td>\n",
        "      <td>0</td>\n",
-       "      <td>4</td>\n",
-       "      <td>399.0</td>\n",
-       "      <td>60.0</td>\n",
-       "      <td>417.0</td>\n",
+       "      <td>0</td>\n",
        "      <td>3</td>\n",
+       "      <td>102.0</td>\n",
+       "      <td>330.0</td>\n",
+       "      <td>432.0</td>\n",
        "      <td>4</td>\n",
+       "      <td>3</td>\n",
        "      <td>4</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>3</td>\n",
+       "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>1</td>\n",
        "      <td>7</td>\n",
-       "      <td>308.0</td>\n",
-       "      <td>1</td>\n",
-       "      <td>3</td>\n",
+       "      <td>440.0</td>\n",
        "      <td>2</td>\n",
        "      <td>3</td>\n",
-       "      <td>907.0</td>\n",
-       "      <td>6.810142</td>\n",
+       "      <td>1</td>\n",
+       "      <td>3</td>\n",
+       "      <td>879.0</td>\n",
+       "      <td>6.778785</td>\n",
        "      <td>0</td>\n",
        "      <td>1</td>\n",
        "      <td>2</td>\n",
        "      <td>2</td>\n",
-       "      <td>16300.0</td>\n",
-       "      <td>16.376597</td>\n",
-       "      <td>2</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>1</td>\n",
-       "      <td>0.0</td>\n",
+       "      <td>9675.0</td>\n",
+       "      <td>15.036009</td>\n",
        "      <td>3</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>9</td>\n",
+       "      <td>80.0</td>\n",
+       "      <td>5</td>\n",
        "      <td>4</td>\n",
        "      <td>2</td>\n",
        "      <td>0.0</td>\n",
        "      <td>0</td>\n",
        "      <td>0.0</td>\n",
        "      <td>5</td>\n",
-       "      <td>2.0</td>\n",
-       "      <td>876.0</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>1783.0</td>\n",
-       "      <td>17.346025</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>864.0</td>\n",
+       "      <td>80.0</td>\n",
+       "      <td>1743.0</td>\n",
+       "      <td>17.244850</td>\n",
        "      <td>3</td>\n",
        "      <td>0.0</td>\n",
        "      <td>0</td>\n",
@@ -3167,7 +3167,7 @@
        "      <td>0</td>\n",
        "      <td>1</td>\n",
        "      <td>0</td>\n",
-       "      <td>0</td>\n",
+       "      <td>1</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
@@ -3204,43 +3204,43 @@
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
-       "      <td>30</td>\n",
-       "      <td>30</td>\n",
-       "      <td>130000.0</td>\n",
-       "      <td>11.775290</td>\n",
+       "      <td>32</td>\n",
+       "      <td>32</td>\n",
+       "      <td>120000.0</td>\n",
+       "      <td>11.695247</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <th>1044</th>\n",
-       "      <th>527451290</th>\n",
-       "      <td>483.0</td>\n",
-       "      <td>6.180017</td>\n",
-       "      <td>504.0</td>\n",
+       "      <th>1046</th>\n",
+       "      <th>527451550</th>\n",
+       "      <td>630.0</td>\n",
+       "      <td>6.445720</td>\n",
+       "      <td>672.0</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>2</td>\n",
+       "      <td>3</td>\n",
        "      <td>3</td>\n",
        "      <td>1</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>3</td>\n",
-       "      <td>96.0</td>\n",
-       "      <td>387.0</td>\n",
+       "      <td>280.0</td>\n",
+       "      <td>350.0</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>5</td>\n",
+       "      <td>3</td>\n",
        "      <td>1</td>\n",
        "      <td>4</td>\n",
        "      <td>0.0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
-       "      <td>1</td>\n",
+       "      <td>2</td>\n",
        "      <td>7</td>\n",
        "      <td>264.0</td>\n",
        "      <td>1</td>\n",
        "      <td>3</td>\n",
        "      <td>1</td>\n",
        "      <td>3</td>\n",
-       "      <td>987.0</td>\n",
-       "      <td>6.894670</td>\n",
+       "      <td>1302.0</td>\n",
+       "      <td>7.171657</td>\n",
        "      <td>1</td>\n",
        "      <td>1</td>\n",
        "      <td>2</td>\n",
@@ -3249,25 +3249,25 @@
        "      <td>11.015074</td>\n",
        "      <td>3</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>232.0</td>\n",
+       "      <td>356.0</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>7</td>\n",
+       "      <td>12</td>\n",
        "      <td>0.0</td>\n",
        "      <td>4</td>\n",
-       "      <td>5</td>\n",
+       "      <td>4</td>\n",
        "      <td>2</td>\n",
        "      <td>0.0</td>\n",
        "      <td>0</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>4</td>\n",
-       "      <td>1.5</td>\n",
-       "      <td>483.0</td>\n",
+       "      <td>6</td>\n",
+       "      <td>2.5</td>\n",
+       "      <td>630.0</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>1470.0</td>\n",
-       "      <td>16.499753</td>\n",
+       "      <td>1932.0</td>\n",
+       "      <td>17.707610</td>\n",
        "      <td>3</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>1</td>\n",
+       "      <td>0</td>\n",
        "      <td>1</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
@@ -3317,16 +3317,16 @@
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
-       "      <td>37</td>\n",
-       "      <td>37</td>\n",
-       "      <td>85400.0</td>\n",
-       "      <td>11.355101</td>\n",
+       "      <td>36</td>\n",
+       "      <td>36</td>\n",
+       "      <td>111750.0</td>\n",
+       "      <td>11.624020</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <th>643</th>\n",
-       "      <th>535303110</th>\n",
-       "      <td>1062.0</td>\n",
-       "      <td>6.967909</td>\n",
+       "      <th>644</th>\n",
+       "      <th>535303150</th>\n",
+       "      <td>1319.0</td>\n",
+       "      <td>7.184629</td>\n",
        "      <td>0.0</td>\n",
        "      <td>0.0</td>\n",
        "      <td>3</td>\n",
@@ -3335,65 +3335,65 @@
        "      <td>1</td>\n",
        "      <td>0</td>\n",
        "      <td>3</td>\n",
-       "      <td>572.0</td>\n",
-       "      <td>490.0</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>5</td>\n",
-       "      <td>1</td>\n",
+       "      <td>428.0</td>\n",
+       "      <td>180.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>2</td>\n",
        "      <td>4</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>0</td>\n",
+       "      <td>2</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>1</td>\n",
-       "      <td>7</td>\n",
-       "      <td>297.0</td>\n",
-       "      <td>1</td>\n",
-       "      <td>3</td>\n",
-       "      <td>1</td>\n",
-       "      <td>3</td>\n",
-       "      <td>1062.0</td>\n",
-       "      <td>6.967909</td>\n",
-       "      <td>0</td>\n",
-       "      <td>1</td>\n",
-       "      <td>2</td>\n",
-       "      <td>2</td>\n",
-       "      <td>8128.0</td>\n",
-       "      <td>14.603584</td>\n",
-       "      <td>2</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>80.0</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>2</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>6</td>\n",
        "      <td>5</td>\n",
+       "      <td>270.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>3</td>\n",
+       "      <td>1</td>\n",
+       "      <td>3</td>\n",
+       "      <td>1319.0</td>\n",
+       "      <td>7.184629</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>2</td>\n",
+       "      <td>2</td>\n",
+       "      <td>10634.0</td>\n",
+       "      <td>15.273749</td>\n",
+       "      <td>3</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>11</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>5</td>\n",
+       "      <td>4</td>\n",
        "      <td>2</td>\n",
        "      <td>0.0</td>\n",
        "      <td>0</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>6</td>\n",
+       "      <td>5</td>\n",
        "      <td>2.0</td>\n",
-       "      <td>1062.0</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>2124.0</td>\n",
-       "      <td>18.142001</td>\n",
+       "      <td>608.0</td>\n",
+       "      <td>66.0</td>\n",
+       "      <td>1927.0</td>\n",
+       "      <td>17.695845</td>\n",
        "      <td>3</td>\n",
-       "      <td>0.0</td>\n",
+       "      <td>66.0</td>\n",
        "      <td>0</td>\n",
        "      <td>1</td>\n",
        "      <td>1</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
-       "      <td>1</td>\n",
-       "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>1</td>\n",
        "      <td>0</td>\n",
        "      <td>1</td>\n",
        "      <td>0</td>\n",
+       "      <td>1</td>\n",
        "      <td>0</td>\n",
+       "      <td>1</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
@@ -3430,10 +3430,10 @@
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
-       "      <td>55</td>\n",
-       "      <td>55</td>\n",
-       "      <td>131000.0</td>\n",
-       "      <td>11.782953</td>\n",
+       "      <td>56</td>\n",
+       "      <td>56</td>\n",
+       "      <td>123000.0</td>\n",
+       "      <td>11.719940</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>160</th>\n",
@@ -3556,225 +3556,225 @@
        "                 1st Flr SF  1st Flr SF (box-cox-0)  2nd Flr SF  3Ssn Porch  \\\n",
        "Order PID                                                                     \n",
        "2775  907175060      1494.0                7.309212         0.0         0.0   \n",
-       "2139  907202100       907.0                6.810142         0.0         0.0   \n",
-       "1044  527451290       483.0                6.180017       504.0         0.0   \n",
-       "643   535303110      1062.0                6.967909         0.0         0.0   \n",
+       "2140  907202220       879.0                6.778785         0.0         0.0   \n",
+       "1046  527451550       630.0                6.445720       672.0         0.0   \n",
+       "644   535303150      1319.0                7.184629         0.0         0.0   \n",
        "160   535401080      1287.0                7.160069         0.0         0.0   \n",
        "\n",
        "                 Bedroom AbvGr  Bsmt Cond  Bsmt Exposure  Bsmt Full Bath  \\\n",
        "Order PID                                                                  \n",
        "2775  907175060              3          3              4               1   \n",
-       "2139  907202100              3          3              3               1   \n",
-       "1044  527451290              2          3              1               0   \n",
-       "643   535303110              3          3              1               1   \n",
+       "2140  907202220              3          3              1               0   \n",
+       "1046  527451550              3          3              1               0   \n",
+       "644   535303150              3          3              1               1   \n",
        "160   535401080              3          3              1               1   \n",
        "\n",
        "                 Bsmt Half Bath  Bsmt Qual  Bsmt Unf SF  BsmtFin SF 1  \\\n",
        "Order PID                                                               \n",
        "2775  907175060               0          4        279.0        1200.0   \n",
-       "2139  907202100               0          4        399.0          60.0   \n",
-       "1044  527451290               0          3         96.0         387.0   \n",
-       "643   535303110               0          3        572.0         490.0   \n",
+       "2140  907202220               0          3        102.0         330.0   \n",
+       "1046  527451550               0          3        280.0         350.0   \n",
+       "644   535303150               0          3          0.0         428.0   \n",
        "160   535401080               0          3        733.0          72.0   \n",
        "\n",
        "                 BsmtFin SF 2  BsmtFin Type 1  BsmtFin Type 2  Electrical  \\\n",
        "Order PID                                                                   \n",
        "2775  907175060           0.0               6               1           4   \n",
-       "2139  907202100         417.0               3               4           4   \n",
-       "1044  527451290           0.0               5               1           4   \n",
-       "643   535303110           0.0               5               1           4   \n",
+       "2140  907202220         432.0               4               3           4   \n",
+       "1046  527451550           0.0               3               1           4   \n",
+       "644   535303150         180.0               4               2           4   \n",
        "160   535401080         258.0               5               3           4   \n",
        "\n",
        "                 Enclosed Porch  Fence  Fireplace Qu  Fireplaces  Full Bath  \\\n",
        "Order PID                                                                     \n",
        "2775  907175060             0.0      0             0           0          2   \n",
-       "2139  907202100             0.0      3             0           0          1   \n",
-       "1044  527451290             0.0      0             0           0          1   \n",
-       "643   535303110             0.0      0             0           0          1   \n",
+       "2140  907202220             0.0      0             0           0          1   \n",
+       "1046  527451550             0.0      0             0           0          2   \n",
+       "644   535303150             0.0      2             0           0          1   \n",
        "160   535401080             0.0      0             4           1          1   \n",
        "\n",
        "                 Functional  Garage Area  Garage Cars  Garage Cond  \\\n",
        "Order PID                                                            \n",
        "2775  907175060           7        576.0            2            3   \n",
-       "2139  907202100           7        308.0            1            3   \n",
-       "1044  527451290           7        264.0            1            3   \n",
-       "643   535303110           7        297.0            1            3   \n",
+       "2140  907202220           7        440.0            2            3   \n",
+       "1046  527451550           7        264.0            1            3   \n",
+       "644   535303150           5        270.0            1            3   \n",
        "160   535401080           7        576.0            2            3   \n",
        "\n",
        "                 Garage Finish  Garage Qual  Gr Liv Area  \\\n",
        "Order PID                                                  \n",
        "2775  907175060              2            3       1494.0   \n",
-       "2139  907202100              2            3        907.0   \n",
-       "1044  527451290              1            3        987.0   \n",
-       "643   535303110              1            3       1062.0   \n",
+       "2140  907202220              1            3        879.0   \n",
+       "1046  527451550              1            3       1302.0   \n",
+       "644   535303150              1            3       1319.0   \n",
        "160   535401080              3            3       1287.0   \n",
        "\n",
        "                 Gr Liv Area (box-cox-0)  Half Bath  Kitchen AbvGr  \\\n",
        "Order PID                                                            \n",
        "2775  907175060                 7.309212          0              1   \n",
-       "2139  907202100                 6.810142          0              1   \n",
-       "1044  527451290                 6.894670          1              1   \n",
-       "643   535303110                 6.967909          0              1   \n",
+       "2140  907202220                 6.778785          0              1   \n",
+       "1046  527451550                 7.171657          1              1   \n",
+       "644   535303150                 7.184629          0              1   \n",
        "160   535401080                 7.160069          0              1   \n",
        "\n",
        "                 Kitchen Qual  Land Slope  Lot Area  Lot Area (box-cox-0.1)  \\\n",
        "Order PID                                                                     \n",
        "2775  907175060             3           2    9236.0               14.920020   \n",
-       "2139  907202100             2           2   16300.0               16.376597   \n",
-       "1044  527451290             2           2    1680.0               11.015074   \n",
-       "643   535303110             2           2    8128.0               14.603584   \n",
+       "2140  907202220             2           2    9675.0               15.036009   \n",
+       "1046  527451550             2           2    1680.0               11.015074   \n",
+       "644   535303150             2           2   10634.0               15.273749   \n",
        "160   535401080             3           2    9830.0               15.075832   \n",
        "\n",
        "                 Lot Shape  Low Qual Fin SF  Mas Vnr Area  Misc Val  Mo Sold  \\\n",
        "Order PID                                                                      \n",
        "2775  907175060          2              0.0           0.0       0.0        7   \n",
-       "2139  907202100          2              0.0           0.0       0.0        1   \n",
-       "1044  527451290          3              0.0         232.0       0.0        7   \n",
-       "643   535303110          2              0.0          80.0       0.0        2   \n",
+       "2140  907202220          3              0.0           0.0       0.0        9   \n",
+       "1046  527451550          3              0.0         356.0       0.0       12   \n",
+       "644   535303150          3              0.0           0.0       0.0       11   \n",
        "160   535401080          2              0.0           0.0       0.0        3   \n",
        "\n",
        "                 Open Porch SF  Overall Cond  Overall Qual  Paved Drive  \\\n",
        "Order PID                                                                 \n",
        "2775  907175060           27.0             4             5            2   \n",
-       "2139  907202100            0.0             3             4            2   \n",
-       "1044  527451290            0.0             4             5            2   \n",
-       "643   535303110            0.0             6             5            2   \n",
+       "2140  907202220           80.0             5             4            2   \n",
+       "1046  527451550            0.0             4             4            2   \n",
+       "644   535303150            0.0             5             4            2   \n",
        "160   535401080           17.0             6             4            2   \n",
        "\n",
        "                 Pool Area  Pool QC  Screen Porch  TotRms AbvGrd  Total Bath  \\\n",
        "Order PID                                                                      \n",
        "2775  907175060        0.0        0           0.0              6         3.0   \n",
-       "2139  907202100        0.0        0           0.0              5         2.0   \n",
-       "1044  527451290        0.0        0           0.0              4         1.5   \n",
-       "643   535303110        0.0        0           0.0              6         2.0   \n",
+       "2140  907202220        0.0        0           0.0              5         1.0   \n",
+       "1046  527451550        0.0        0           0.0              6         2.5   \n",
+       "644   535303150        0.0        0           0.0              5         2.0   \n",
        "160   535401080        0.0        0         182.0              7         2.0   \n",
        "\n",
        "                 Total Bsmt SF  Total Porch SF  Total SF  \\\n",
        "Order PID                                                  \n",
        "2775  907175060         1479.0           195.0    2973.0   \n",
-       "2139  907202100          876.0             0.0    1783.0   \n",
-       "1044  527451290          483.0             0.0    1470.0   \n",
-       "643   535303110         1062.0             0.0    2124.0   \n",
+       "2140  907202220          864.0            80.0    1743.0   \n",
+       "1046  527451550          630.0             0.0    1932.0   \n",
+       "644   535303150          608.0            66.0    1927.0   \n",
        "160   535401080         1063.0           563.0    2350.0   \n",
        "\n",
        "                 Total SF (box-cox-0.2)  Utilities  Wood Deck SF  \\\n",
        "Order PID                                                          \n",
        "2775  907175060               19.751925          3         168.0   \n",
-       "2139  907202100               17.346025          3           0.0   \n",
-       "1044  527451290               16.499753          3           0.0   \n",
-       "643   535303110               18.142001          3           0.0   \n",
+       "2140  907202220               17.244850          3           0.0   \n",
+       "1046  527451550               17.707610          3           0.0   \n",
+       "644   535303150               17.695845          3          66.0   \n",
        "160   535401080               18.614762          3         364.0   \n",
        "\n",
        "                 abnormal_sale  air_cond  build_type_1Fam  build_type_2Fam  \\\n",
        "Order PID                                                                    \n",
        "2775  907175060              0         1                1                0   \n",
-       "2139  907202100              0         1                1                0   \n",
-       "1044  527451290              1         1                0                0   \n",
-       "643   535303110              0         1                1                0   \n",
+       "2140  907202220              0         1                1                0   \n",
+       "1046  527451550              0         1                0                0   \n",
+       "644   535303150              0         1                1                0   \n",
        "160   535401080              0         1                1                0   \n",
        "\n",
        "                 build_type_Twnhs  found_BrkTil  found_CBlock  found_PConc  \\\n",
        "Order PID                                                                    \n",
        "2775  907175060                 0             0             0            1   \n",
-       "2139  907202100                 0             0             1            0   \n",
-       "1044  527451290                 1             0             1            0   \n",
-       "643   535303110                 0             0             1            0   \n",
+       "2140  907202220                 0             0             1            0   \n",
+       "1046  527451550                 1             0             1            0   \n",
+       "644   535303150                 0             0             0            1   \n",
        "160   535401080                 0             0             1            0   \n",
        "\n",
        "                 has 2nd Flr  has Bsmt  has Fireplace  has Garage  has Pool  \\\n",
        "Order PID                                                                     \n",
        "2775  907175060            0         1              0           1         0   \n",
-       "2139  907202100            0         1              0           1         0   \n",
-       "1044  527451290            1         1              0           1         0   \n",
-       "643   535303110            0         1              0           1         0   \n",
+       "2140  907202220            0         1              0           1         0   \n",
+       "1046  527451550            1         1              0           1         0   \n",
+       "644   535303150            0         1              0           1         0   \n",
        "160   535401080            0         1              1           1         0   \n",
        "\n",
        "                 has Porch  major_street  new_home  nhood_Blmngtn  \\\n",
        "Order PID                                                           \n",
        "2775  907175060          1             0         0              0   \n",
-       "2139  907202100          0             0         0              0   \n",
-       "1044  527451290          0             0         0              0   \n",
-       "643   535303110          0             0         0              0   \n",
+       "2140  907202220          1             0         0              0   \n",
+       "1046  527451550          0             0         0              0   \n",
+       "644   535303150          1             0         0              0   \n",
        "160   535401080          1             0         0              0   \n",
        "\n",
        "                 nhood_Blueste  nhood_BrDale  nhood_BrkSide  nhood_ClearCr  \\\n",
        "Order PID                                                                    \n",
        "2775  907175060              0             0              0              0   \n",
-       "2139  907202100              0             0              0              0   \n",
-       "1044  527451290              0             1              0              0   \n",
-       "643   535303110              0             0              0              0   \n",
+       "2140  907202220              0             0              0              0   \n",
+       "1046  527451550              0             1              0              0   \n",
+       "644   535303150              0             0              0              0   \n",
        "160   535401080              0             0              0              0   \n",
        "\n",
        "                 nhood_CollgCr  nhood_Crawfor  nhood_Edwards  nhood_Gilbert  \\\n",
        "Order PID                                                                     \n",
        "2775  907175060              1              0              0              0   \n",
-       "2139  907202100              1              0              0              0   \n",
-       "1044  527451290              0              0              0              0   \n",
-       "643   535303110              0              0              0              0   \n",
+       "2140  907202220              1              0              0              0   \n",
+       "1046  527451550              0              0              0              0   \n",
+       "644   535303150              0              0              0              0   \n",
        "160   535401080              0              0              0              0   \n",
        "\n",
        "                 nhood_Greens  nhood_GrnHill  nhood_IDOTRR  nhood_Landmrk  \\\n",
        "Order PID                                                                   \n",
        "2775  907175060             0              0             0              0   \n",
-       "2139  907202100             0              0             0              0   \n",
-       "1044  527451290             0              0             0              0   \n",
-       "643   535303110             0              0             0              0   \n",
+       "2140  907202220             0              0             0              0   \n",
+       "1046  527451550             0              0             0              0   \n",
+       "644   535303150             0              0             0              0   \n",
        "160   535401080             0              0             0              0   \n",
        "\n",
        "                 nhood_MeadowV  nhood_Mitchel  nhood_NPkVill  nhood_NWAmes  \\\n",
        "Order PID                                                                    \n",
        "2775  907175060              0              0              0             0   \n",
-       "2139  907202100              0              0              0             0   \n",
-       "1044  527451290              0              0              0             0   \n",
-       "643   535303110              0              0              0             0   \n",
+       "2140  907202220              0              0              0             0   \n",
+       "1046  527451550              0              0              0             0   \n",
+       "644   535303150              0              0              0             0   \n",
        "160   535401080              0              0              0             0   \n",
        "\n",
        "                 nhood_Names  nhood_NoRidge  nhood_NridgHt  nhood_OldTown  \\\n",
        "Order PID                                                                   \n",
        "2775  907175060            0              0              0              0   \n",
-       "2139  907202100            0              0              0              0   \n",
-       "1044  527451290            0              0              0              0   \n",
-       "643   535303110            1              0              0              0   \n",
+       "2140  907202220            0              0              0              0   \n",
+       "1046  527451550            0              0              0              0   \n",
+       "644   535303150            1              0              0              0   \n",
        "160   535401080            1              0              0              0   \n",
        "\n",
        "                 nhood_SWISU  nhood_Sawyer  nhood_SawyerW  nhood_Somerst  \\\n",
        "Order PID                                                                  \n",
        "2775  907175060            0             0              0              0   \n",
-       "2139  907202100            0             0              0              0   \n",
-       "1044  527451290            0             0              0              0   \n",
-       "643   535303110            0             0              0              0   \n",
+       "2140  907202220            0             0              0              0   \n",
+       "1046  527451550            0             0              0              0   \n",
+       "644   535303150            0             0              0              0   \n",
        "160   535401080            0             0              0              0   \n",
        "\n",
        "                 nhood_StoneBr  nhood_Timber  nhood_Veenker  park  \\\n",
        "Order PID                                                           \n",
        "2775  907175060              0             0              0     0   \n",
-       "2139  907202100              0             0              0     0   \n",
-       "1044  527451290              0             0              0     0   \n",
-       "643   535303110              0             0              0     0   \n",
+       "2140  907202220              0             0              0     0   \n",
+       "1046  527451550              0             0              0     0   \n",
+       "644   535303150              0             0              0     0   \n",
        "160   535401080              0             0              0     0   \n",
        "\n",
        "                 partial_sale  railway  recently_built  recently_remodeled  \\\n",
        "Order PID                                                                    \n",
        "2775  907175060             0        0               1                   1   \n",
-       "2139  907202100             0        0               0                   0   \n",
-       "1044  527451290             0        0               0                   0   \n",
-       "643   535303110             0        0               0                   0   \n",
+       "2140  907202220             0        0               0                   0   \n",
+       "1046  527451550             0        0               0                   0   \n",
+       "644   535303150             0        0               0                   0   \n",
        "160   535401080             0        0               0                   1   \n",
        "\n",
        "                 remodeled  years_since_built  years_since_remodeled  \\\n",
        "Order PID                                                              \n",
        "2775  907175060          0                  9                      9   \n",
-       "2139  907202100          0                 30                     30   \n",
-       "1044  527451290          0                 37                     37   \n",
-       "643   535303110          0                 55                     55   \n",
+       "2140  907202220          0                 32                     32   \n",
+       "1046  527451550          0                 36                     36   \n",
+       "644   535303150          0                 56                     56   \n",
        "160   535401080          1                 51                      4   \n",
        "\n",
        "                 SalePrice  SalePrice (box-cox-0)  \n",
        "Order PID                                          \n",
        "2775  907175060   217000.0              12.287653  \n",
-       "2139  907202100   130000.0              11.775290  \n",
-       "1044  527451290    85400.0              11.355101  \n",
-       "643   535303110   131000.0              11.782953  \n",
+       "2140  907202220   120000.0              11.695247  \n",
+       "1046  527451550   111750.0              11.624020  \n",
+       "644   535303150   123000.0              11.719940  \n",
        "160   535401080   162000.0              11.995352  "
       ]
      },
@@ -3861,10 +3861,10 @@
      "output_type": "stream",
      "text": [
       "<class 'pandas.core.frame.DataFrame'>\n",
-      "MultiIndex: 2883 entries, (2775, 907175060) to (2659, 902305090)\n",
+      "MultiIndex: 2883 entries, (2775, 907175060) to (2660, 902325050)\n",
       "Columns: 32 entries, 1st Flr SF to SalePrice (box-cox-0)\n",
       "dtypes: float64(16), int64(16)\n",
-      "memory usage: 777.2 KB\n"
+      "memory usage: 906.2 KB\n"
      ]
     }
    ],
@@ -4007,112 +4007,112 @@
        "      <td>12.287653</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <th>2139</th>\n",
-       "      <th>907202100</th>\n",
-       "      <td>907.0</td>\n",
-       "      <td>6.810142</td>\n",
+       "      <th>2140</th>\n",
+       "      <th>907202220</th>\n",
+       "      <td>879.0</td>\n",
+       "      <td>6.778785</td>\n",
+       "      <td>1</td>\n",
        "      <td>3</td>\n",
+       "      <td>330.0</td>\n",
        "      <td>4</td>\n",
-       "      <td>60.0</td>\n",
-       "      <td>3</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
        "      <td>1</td>\n",
-       "      <td>308.0</td>\n",
+       "      <td>440.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>3</td>\n",
        "      <td>1</td>\n",
        "      <td>3</td>\n",
-       "      <td>2</td>\n",
-       "      <td>3</td>\n",
-       "      <td>907.0</td>\n",
-       "      <td>6.810142</td>\n",
+       "      <td>879.0</td>\n",
+       "      <td>6.778785</td>\n",
        "      <td>0</td>\n",
        "      <td>2</td>\n",
-       "      <td>16.376597</td>\n",
-       "      <td>2</td>\n",
+       "      <td>15.036009</td>\n",
+       "      <td>3</td>\n",
        "      <td>0.0</td>\n",
        "      <td>4</td>\n",
        "      <td>2</td>\n",
        "      <td>5</td>\n",
-       "      <td>2.0</td>\n",
-       "      <td>876.0</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>864.0</td>\n",
+       "      <td>80.0</td>\n",
+       "      <td>1743.0</td>\n",
+       "      <td>17.244850</td>\n",
        "      <td>0.0</td>\n",
-       "      <td>1783.0</td>\n",
-       "      <td>17.346025</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>130000.0</td>\n",
-       "      <td>11.775290</td>\n",
+       "      <td>120000.0</td>\n",
+       "      <td>11.695247</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <th>1044</th>\n",
-       "      <th>527451290</th>\n",
-       "      <td>483.0</td>\n",
-       "      <td>6.180017</td>\n",
+       "      <th>1046</th>\n",
+       "      <th>527451550</th>\n",
+       "      <td>630.0</td>\n",
+       "      <td>6.445720</td>\n",
        "      <td>1</td>\n",
        "      <td>3</td>\n",
-       "      <td>387.0</td>\n",
-       "      <td>5</td>\n",
+       "      <td>350.0</td>\n",
+       "      <td>3</td>\n",
        "      <td>0</td>\n",
        "      <td>0</td>\n",
-       "      <td>1</td>\n",
+       "      <td>2</td>\n",
        "      <td>264.0</td>\n",
        "      <td>1</td>\n",
        "      <td>3</td>\n",
        "      <td>1</td>\n",
        "      <td>3</td>\n",
-       "      <td>987.0</td>\n",
-       "      <td>6.894670</td>\n",
+       "      <td>1302.0</td>\n",
+       "      <td>7.171657</td>\n",
        "      <td>1</td>\n",
        "      <td>2</td>\n",
        "      <td>11.015074</td>\n",
        "      <td>3</td>\n",
-       "      <td>232.0</td>\n",
-       "      <td>5</td>\n",
-       "      <td>2</td>\n",
+       "      <td>356.0</td>\n",
        "      <td>4</td>\n",
-       "      <td>1.5</td>\n",
-       "      <td>483.0</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>1470.0</td>\n",
-       "      <td>16.499753</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>85400.0</td>\n",
-       "      <td>11.355101</td>\n",
-       "    </tr>\n",
-       "    <tr>\n",
-       "      <th>643</th>\n",
-       "      <th>535303110</th>\n",
-       "      <td>1062.0</td>\n",
-       "      <td>6.967909</td>\n",
-       "      <td>1</td>\n",
-       "      <td>3</td>\n",
-       "      <td>490.0</td>\n",
-       "      <td>5</td>\n",
-       "      <td>0</td>\n",
-       "      <td>0</td>\n",
-       "      <td>1</td>\n",
-       "      <td>297.0</td>\n",
-       "      <td>1</td>\n",
-       "      <td>3</td>\n",
-       "      <td>1</td>\n",
-       "      <td>3</td>\n",
-       "      <td>1062.0</td>\n",
-       "      <td>6.967909</td>\n",
-       "      <td>0</td>\n",
-       "      <td>2</td>\n",
-       "      <td>14.603584</td>\n",
-       "      <td>2</td>\n",
-       "      <td>80.0</td>\n",
-       "      <td>5</td>\n",
        "      <td>2</td>\n",
        "      <td>6</td>\n",
+       "      <td>2.5</td>\n",
+       "      <td>630.0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>1932.0</td>\n",
+       "      <td>17.707610</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>111750.0</td>\n",
+       "      <td>11.624020</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>644</th>\n",
+       "      <th>535303150</th>\n",
+       "      <td>1319.0</td>\n",
+       "      <td>7.184629</td>\n",
+       "      <td>1</td>\n",
+       "      <td>3</td>\n",
+       "      <td>428.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>270.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>3</td>\n",
+       "      <td>1</td>\n",
+       "      <td>3</td>\n",
+       "      <td>1319.0</td>\n",
+       "      <td>7.184629</td>\n",
+       "      <td>0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>15.273749</td>\n",
+       "      <td>3</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>2</td>\n",
+       "      <td>5</td>\n",
        "      <td>2.0</td>\n",
-       "      <td>1062.0</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>2124.0</td>\n",
-       "      <td>18.142001</td>\n",
-       "      <td>0.0</td>\n",
-       "      <td>131000.0</td>\n",
-       "      <td>11.782953</td>\n",
+       "      <td>608.0</td>\n",
+       "      <td>66.0</td>\n",
+       "      <td>1927.0</td>\n",
+       "      <td>17.695845</td>\n",
+       "      <td>66.0</td>\n",
+       "      <td>123000.0</td>\n",
+       "      <td>11.719940</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>160</th>\n",
@@ -4158,81 +4158,81 @@
        "                 1st Flr SF  1st Flr SF (box-cox-0)  Bsmt Exposure  Bsmt Qual  \\\n",
        "Order PID                                                                       \n",
        "2775  907175060      1494.0                7.309212              4          4   \n",
-       "2139  907202100       907.0                6.810142              3          4   \n",
-       "1044  527451290       483.0                6.180017              1          3   \n",
-       "643   535303110      1062.0                6.967909              1          3   \n",
+       "2140  907202220       879.0                6.778785              1          3   \n",
+       "1046  527451550       630.0                6.445720              1          3   \n",
+       "644   535303150      1319.0                7.184629              1          3   \n",
        "160   535401080      1287.0                7.160069              1          3   \n",
        "\n",
        "                 BsmtFin SF 1  BsmtFin Type 1  Fireplace Qu  Fireplaces  \\\n",
        "Order PID                                                                 \n",
        "2775  907175060        1200.0               6             0           0   \n",
-       "2139  907202100          60.0               3             0           0   \n",
-       "1044  527451290         387.0               5             0           0   \n",
-       "643   535303110         490.0               5             0           0   \n",
+       "2140  907202220         330.0               4             0           0   \n",
+       "1046  527451550         350.0               3             0           0   \n",
+       "644   535303150         428.0               4             0           0   \n",
        "160   535401080          72.0               5             4           1   \n",
        "\n",
        "                 Full Bath  Garage Area  Garage Cars  Garage Cond  \\\n",
        "Order PID                                                           \n",
        "2775  907175060          2        576.0            2            3   \n",
-       "2139  907202100          1        308.0            1            3   \n",
-       "1044  527451290          1        264.0            1            3   \n",
-       "643   535303110          1        297.0            1            3   \n",
+       "2140  907202220          1        440.0            2            3   \n",
+       "1046  527451550          2        264.0            1            3   \n",
+       "644   535303150          1        270.0            1            3   \n",
        "160   535401080          1        576.0            2            3   \n",
        "\n",
        "                 Garage Finish  Garage Qual  Gr Liv Area  \\\n",
        "Order PID                                                  \n",
        "2775  907175060              2            3       1494.0   \n",
-       "2139  907202100              2            3        907.0   \n",
-       "1044  527451290              1            3        987.0   \n",
-       "643   535303110              1            3       1062.0   \n",
+       "2140  907202220              1            3        879.0   \n",
+       "1046  527451550              1            3       1302.0   \n",
+       "644   535303150              1            3       1319.0   \n",
        "160   535401080              3            3       1287.0   \n",
        "\n",
        "                 Gr Liv Area (box-cox-0)  Half Bath  Kitchen Qual  \\\n",
        "Order PID                                                           \n",
        "2775  907175060                 7.309212          0             3   \n",
-       "2139  907202100                 6.810142          0             2   \n",
-       "1044  527451290                 6.894670          1             2   \n",
-       "643   535303110                 6.967909          0             2   \n",
+       "2140  907202220                 6.778785          0             2   \n",
+       "1046  527451550                 7.171657          1             2   \n",
+       "644   535303150                 7.184629          0             2   \n",
        "160   535401080                 7.160069          0             3   \n",
        "\n",
        "                 Lot Area (box-cox-0.1)  Lot Shape  Mas Vnr Area  \\\n",
        "Order PID                                                          \n",
        "2775  907175060               14.920020          2           0.0   \n",
-       "2139  907202100               16.376597          2           0.0   \n",
-       "1044  527451290               11.015074          3         232.0   \n",
-       "643   535303110               14.603584          2          80.0   \n",
+       "2140  907202220               15.036009          3           0.0   \n",
+       "1046  527451550               11.015074          3         356.0   \n",
+       "644   535303150               15.273749          3           0.0   \n",
        "160   535401080               15.075832          2           0.0   \n",
        "\n",
        "                 Overall Qual  Paved Drive  TotRms AbvGrd  Total Bath  \\\n",
        "Order PID                                                               \n",
        "2775  907175060             5            2              6         3.0   \n",
-       "2139  907202100             4            2              5         2.0   \n",
-       "1044  527451290             5            2              4         1.5   \n",
-       "643   535303110             5            2              6         2.0   \n",
+       "2140  907202220             4            2              5         1.0   \n",
+       "1046  527451550             4            2              6         2.5   \n",
+       "644   535303150             4            2              5         2.0   \n",
        "160   535401080             4            2              7         2.0   \n",
        "\n",
        "                 Total Bsmt SF  Total Porch SF  Total SF  \\\n",
        "Order PID                                                  \n",
        "2775  907175060         1479.0           195.0    2973.0   \n",
-       "2139  907202100          876.0             0.0    1783.0   \n",
-       "1044  527451290          483.0             0.0    1470.0   \n",
-       "643   535303110         1062.0             0.0    2124.0   \n",
+       "2140  907202220          864.0            80.0    1743.0   \n",
+       "1046  527451550          630.0             0.0    1932.0   \n",
+       "644   535303150          608.0            66.0    1927.0   \n",
        "160   535401080         1063.0           563.0    2350.0   \n",
        "\n",
        "                 Total SF (box-cox-0.2)  Wood Deck SF  SalePrice  \\\n",
        "Order PID                                                          \n",
        "2775  907175060               19.751925         168.0   217000.0   \n",
-       "2139  907202100               17.346025           0.0   130000.0   \n",
-       "1044  527451290               16.499753           0.0    85400.0   \n",
-       "643   535303110               18.142001           0.0   131000.0   \n",
+       "2140  907202220               17.244850           0.0   120000.0   \n",
+       "1046  527451550               17.707610           0.0   111750.0   \n",
+       "644   535303150               17.695845          66.0   123000.0   \n",
        "160   535401080               18.614762         364.0   162000.0   \n",
        "\n",
        "                 SalePrice (box-cox-0)  \n",
        "Order PID                               \n",
        "2775  907175060              12.287653  \n",
-       "2139  907202100              11.775290  \n",
-       "1044  527451290              11.355101  \n",
-       "643   535303110              11.782953  \n",
+       "2140  907202220              11.695247  \n",
+       "1046  527451550              11.624020  \n",
+       "644   535303150              11.719940  \n",
        "160   535401080              11.995352  "
       ]
      },
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-       " 'rmse': 1902925384.0}"
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+       "{'bias': -820.0,\n",
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+       "{'bias': -165.0,\n",
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+       "{'bias': -2250.0,\n",
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      "data": {
       "text/plain": [
-       "[('rf', 25354.0), ('ridge', 29970.0), ('lasso', 33496.0), ('lm', 1902925384.0)]"
+       "[('rf', 25354.0), ('ridge', 29970.0), ('lasso', 33496.0), ('lm', 820848886.0)]"
       ]
      },
      "execution_count": 60,
@@ -5528,7 +5528,7 @@
     {
      "data": {
       "text/plain": [
-       "[('ridge', 21752.0), ('lm', 21864.0), ('rf', 22565.0), ('lasso', 24443.0)]"
+       "[('lm', 21829.0), ('ridge', 21835.0), ('rf', 22813.0), ('lasso', 24529.0)]"
       ]
      },
      "execution_count": 61,
@@ -5548,7 +5548,7 @@
     {
      "data": {
       "text/plain": [
-       "[('ridge', 19141.0), ('lm', 19223.0), ('lasso', 21064.0), ('rf', 23086.0)]"
+       "[('ridge', 19073.0), ('lm', 19106.0), ('lasso', 21081.0), ('rf', 23000.0)]"
       ]
      },
      "execution_count": 62,
@@ -5568,7 +5568,7 @@
     {
      "data": {
       "text/plain": [
-       "[('rf', 24222.0), ('ridge', 25686.0), ('lm', 25704.0), ('lasso', 32065.0)]"
+       "[('rf', 24274.0), ('ridge', 25659.0), ('lm', 25682.0), ('lasso', 31672.0)]"
       ]
      },
      "execution_count": 63,
@@ -5588,7 +5588,7 @@
     {
      "data": {
       "text/plain": [
-       "[('ridge', 23329.0), ('lm', 23341.0), ('lasso', 24262.0), ('rf', 24746.0)]"
+       "[('ridge', 23280.0), ('lm', 23335.0), ('lasso', 24205.0), ('rf', 24785.0)]"
       ]
      },
      "execution_count": 64,
@@ -5615,7 +5615,7 @@
     {
      "data": {
       "text/plain": [
-       "[('rf', 0.898), ('ridge', 0.853), ('lasso', 0.817), ('lm', -568953281.52)]"
+       "[('rf', 0.898), ('ridge', 0.853), ('lasso', 0.817), ('lm', -106245976.863)]"
       ]
      },
      "execution_count": 65,
@@ -5635,7 +5635,7 @@
     {
      "data": {
       "text/plain": [
-       "[('ridge', 0.918), ('lm', 0.917), ('rf', 0.912), ('lasso', 0.896)]"
+       "[('lm', 0.919), ('ridge', 0.919), ('rf', 0.91), ('lasso', 0.896)]"
       ]
      },
      "execution_count": 66,
@@ -5655,7 +5655,7 @@
     {
      "data": {
       "text/plain": [
-       "[('lm', 0.936), ('ridge', 0.936), ('lasso', 0.923), ('rf', 0.908)]"
+       "[('lm', 0.938), ('ridge', 0.938), ('lasso', 0.923), ('rf', 0.908)]"
       ]
      },
      "execution_count": 67,
@@ -5675,7 +5675,7 @@
     {
      "data": {
       "text/plain": [
-       "[('rf', 0.899), ('lm', 0.887), ('ridge', 0.887), ('lasso', 0.821)]"
+       "[('rf', 0.898), ('lm', 0.887), ('ridge', 0.887), ('lasso', 0.827)]"
       ]
      },
      "execution_count": 68,
@@ -5695,7 +5695,7 @@
     {
      "data": {
       "text/plain": [
-       "[('lm', 0.907), ('ridge', 0.907), ('lasso', 0.899), ('rf', 0.895)]"
+       "[('ridge', 0.907), ('lm', 0.906), ('lasso', 0.899), ('rf', 0.893)]"
       ]
      },
      "execution_count": 69,
@@ -5724,7 +5724,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.8"
+   "version": "3.8.5"
   }
  },
  "nbformat": 4,
diff --git a/README.md b/README.md
index b99a060..a78eab0 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ with by following these links:
 - *Notebook 0*: [Data Cleaning](https://mybinder.org/v2/gh/webartifex/ames-housing/main?urlpath=lab/tree/00_data_cleaning.ipynb)
 - *Notebook 1*: [Correlations](https://mybinder.org/v2/gh/webartifex/ames-housing/main?urlpath=lab/tree/01_pairwise_correlations.ipynb)
 - *Notebook 2*: [Visualizations](https://mybinder.org/v2/gh/webartifex/ames-housing/main?urlpath=lab/tree/02_descriptive_visualizations.ipynb)
-- *Notebook 4*: [Predictions](https://mybinder.org/v2/gh/webartifex/ames-housing/main?urlpath=lab/tree/04_predictive_models.ipynb)
+- *Notebook 3*: [Predictions](https://mybinder.org/v2/gh/webartifex/ames-housing/main?urlpath=lab/tree/03_predictive_models.ipynb)
 
 
 ### Objective