Use the variables beta_0 and beta_1 as well as the list x_train to calculate the estimated response values for the training set. Store the results in a list named pred_y_train. You can accomplish this task using either a loop or a list comprehension. This cell should not produce any output.

Use the values stored in y_train and pred_y_train to calculate the residuals for the training set. Store the results in a list named error_y_train. You can accomplish this task using either a loop or a list comprehension. This cell should not produce any output.