Question

X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3, random_state=101)

model = LinearRegression()
test_predictions = model.predict(X_test)
MAE = mean_absolute_error(y_test, test_predictions)
Identify an error in the code. Assume X is the feature matrix, y is the label vector, and all the necessary import statements have been executed.

Answer 1

The code is missing an import statement for the train_test_split function.

Step-by-step explanation:

An error in the code is that the train_test_split function has not been imported from the necessary module. This function is used to split the data into training and testing sets. To fix this error, include the import statement for the train_test_split function.