In Problem 14.5 on page 583, you used horsepower and weight to predict mileage (stored in Auto2010).

Question:

In Problem 14.5 on page 583, you used horsepower and weight to predict mileage (stored in Auto2010).
a. Plot the residuals versus
b. Plot the residuals versus X1t.
c. Plot the residuals versus X2t.
d. In the residual plots created in (a) through (c), is there any evidence of a violation of the regression assumptions? Explain.
e. Should you compute the Durbin-Watson statistic for these data? Explain.