Split the MR_X and MR_y into training set and test set. You should use the num training variable to extract the data from MR_X and MR_y. Extract the first 'num_training' samples as training data, and...

Extracted text: Split the MR_X and MR_y into training set and test set. You should use the num training variable to extract the data from MR_X and MR_y. Extract the first 'num_training' samples as training data, and extract the rest as test data. Name them as: MR_train_X and MR_train_y for the training set MR_test_X and MR_test_y for the test set