Question

Which dataset(s) do we use to create predictions?

1) X_test
2) X_test and y_test
3) X_train and X_test
4) X_train

Answer 1

We use the X_train and X_test datasets to create predictions.

Step-by-step explanation:

When creating predictions, we typically use the X_test dataset. This dataset contains the independent variables on which we want to predict the dependent variable. In the context of the given information, the independent variable is the third exam score (x), and the dependent variable is the final exam score (y). Therefore, the correct answer is option 3) X_train and X_test.