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Gasoline Mileage Ratings. Refer to Exercise B.84 on page B-113, where we considered the regression of gasoline mileage (mpg) on displacement (disp), horsepower (hp), and weight (weight) for 82 vehicles classified as cars. Use Output B.69 on pages B-114–B-116 to do the following.
- a. Use the maximum-R2 criterion to obtain a regression equation for these data.
- b. Use the adjusted-R2 criterion to obtain a regression equation for these data.
- c. Use the Mallows’ Cp criterion to obtain a regression equation for these data.
- d. Do the three methods used in parts (a), (b), and (c) yield the same final regression equation? If so, is that always the case?
OUTPUT B.69 Output for Exercises B.84, B.98, and B.115
Predictor variable is disp
Predictor variable is hp
OUTPUT B.69 (cont.) Output for Exercises B.84, B.98, and B. 115
Predictor variable is weight
Predictor variables are disp and hp
Predictor variables are disp and weight
Predictor variables are hp and weight
OUTPUT B.69 (cont.) Output for Exercises B.84, B.98, and B. 115
Predictor variables are disp, hp, and weight
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Chapter B Solutions
Introductory Statistics, Books a la Carte Plus NEW MyLab Statistics with Pearson eText -- Access Card Package (10th Edition)
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