out =
mtcars ()
¶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).
mpg
Fuel efficiency in miles/gallon
cyl
Number of cylinders
disp
Displacement (cu. in.)
hp
Gross horsepower
drat
Rear axle ratio
wt
Weight (1,000 lbs)
qsec
1/4 mile time
vs
Engine type (0 = V-shaped, 1 = straight)
am
Transmission type (0 = automatic, 1 = manual)
gear
Number of forward gears
carb
Number 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