How does the horsepower and weight affect the mileage of family Sedan ? Data from a sample of 20 2010 family sedans were collected and organized and stored in Auto 2010 :
a) State the multiple regression equation
b) interpret the meaning of the slopes b1 and b2
c) Explain why the regression coefficient b0 has no practical meaning in the context of this problem
| Audi A3 |
25 |
200 |
3305 |
| Chevrolet Malibu |
25 |
169 |
3355 |
| Chrysler Sebring |
23 |
173 |
3335 |
| Dodge Avenger |
20 |
235 |
3550 |
| Ford Fusion |
22 |
240 |
3530 |
| Honda Accord |
23 |
177 |
3270 |
| Kia Optima |
25 |
175 |
3150 |
| Kia Rondo |
21 |
192 |
3660 |
| Mazda6 |
24 |
170 |
3185 |
| Mercury Milan |
24 |
175 |
3365 |
| Mitsubishi Galant |
23 |
160 |
3430 |
| Nissan Altima |
26 |
175 |
3155 |
| Nissan Maxima |
22 |
290 |
3555 |
| Suburu Legacy |
25 |
170 |
3390 |
| Suburu Outback |
24 |
170 |
3795 |
| Toyota Camry |
26 |
169 |
3335 |
| Volkswagen CC |
24 |
200 |
3370 |
| VolkswagenPassat |
24 |
200 |
3465 |
| Volvo S40 |
23 |
168 |
3245 |
| VolvoV50 |
20 |
227 |
3555 |