Car Model Mazda RX4 Mazda RX4 Wag Datsun 710 Hornet 4 Drive Hornet Sportabout Valiant Duster 360 Merc 2400 Merc 230 Merc 280 Merc 280C Merc 450SE Merc 450SL Merc 450SLC Cadillac Fleetwood Lincoln Continental Chrysler Imperial Fiat 128 Honda Civic Toyota Corolla Toyota Corona Dodge Challenger AMC Javelin Camaro Z28 Pontiac Firebird Fiat Xl-9 Porsche 914-2 Lotus Europa Ford Pantera L Ferrari Dino Maserati Bora volvo 142E MPG 21.0 21.0 21.4 14.3 24.4 19.2 17.8 16.4 17.3 10.4 10.4 14.7 32.4 33.9 21.5 13.3 19.2 27.3 26.0 19.7 21.4 Displace 160.0 160.0 108.0 146.7 140.8 167.6 167.6 275.8 275.8 275.8 472.0 78.7 75.7 71.1 318.0 95.1 351.0 145.0 301.0 121.0 Weight 2.620 2.875 2.320 3.215 3.570 3.190 3.730 3.780 5.424 1.615 1.835 3.520 3.435 1.935 2.140 1.513 3.170 3.570 2.780 Quarter 16.46 17.02 18.61 19.44 17.02 17.40 17.60 17.98 17.82 17.42 19.47 18.52 19.90 20.01 16.87 17.30 15.41 17.05 16.70 16.90 14.50 14.60 Variable Descriptions MPG Displace Weight Quarter Model Parameters Dependent Variable Predictors Displace Weight Quarter Intercept The miles per gallon achieved for each car A measure of the size of the car engine The weight of the car in thousands of pounds The number of seconds to race a quarter mile MPG Coefficient -0.000127896 -5.034409717 0.926649235 19.77755757