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Motor Trend 1974 Car Road Tests
The data was extracted from the 1974 Motor Trend US magazine, and comprises fuel consumption and 10 aspects of automobile design and performance for 32 automobiles (1973–74 models).
mpgFuel efficiency in miles/gallon
cylNumber of cylinders
dispDisplacement (cu. in.)
hpGross horsepower
dratRear axle ratio
wtWeight (1,000 lbs)
qsec1/4 mile time
vsEngine type (0 = V-shaped, 1 = straight)
amTransmission type (0 = automatic, 1 = manual)
gearNumber of forward gears
carbNumber of carburetors
Henderson and Velleman (1981) comment in a footnote to Table 1: “Hocking [original transcriber]’s noncrucial coding of the Mazda’s rotary engine as a straight six-cylinder engine and the Porsche’s flat engine as a V engine, as well as the inclusion of the diesel Mercedes 240D, have been retained to enable direct comparisons to be made with previous analyses.”
Henderson and Velleman (1981). Building multiple regression models interactively. Biometrics, 37, 391–411.
# TODO: Port this example from R