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Update Day 3_Multiple_Linear_Regression.md

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@ -36,7 +36,7 @@ X = X[: , 1:]
### 拆分数据集为训练集和测试集 ### 拆分数据集为训练集和测试集
```python ```python
from sklearn.cross_validation import train_test_split from sklearn.model_selection import train_test_split
X_train, X_test, Y_train, Y_test = train_test_split(X, Y, test_size = 0.2, random_state = 0) X_train, X_test, Y_train, Y_test = train_test_split(X, Y, test_size = 0.2, random_state = 0)
``` ```
## 第2步： 在训练集上训练多元线性回归模型 ## 第2步： 在训练集上训练多元线性回归模型