Fuel Economy. Refer to the following table of fuel economy data for a sample of 10 vehicles for Exercises 80–84. The predictor variable is , expressed in liters; the response variable is , expressed in miles per gallon (mpg).
| Vehicle | ||
|---|---|---|
| Mini Cooper | 1.6 | 31 |
| Ford Focus | 2.0 | 28 |
| Toyota Camry | 2.5 | 26 |
| Honda Accord | 2.4 | 26 |
| Subaru Forester | 2.5 | 23 |
| Toyota Highlander | 2.7 | 22 |
| Ford Taurus | 3.5 | 20 |
| Chevrolet Equinox | 3.0 | 19 |
| Dodge Nitro | 4.0 | 17 |
| Cadillac limousine | 4.6 | 14 |
enginempg
82. Correlation. Do the following: