mtcars
Motor Trend 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).
Usage
mtcars
Format
A data frame with 32 observations on 11 variables.
[, 1] | mpg | Miles/(US) gallon |
[, 2] | cyl | Number of cylinders |
[, 3] | disp | Displacement (cu.in.) |
[, 4] | hp | Gross horsepower |
[, 5] | drat | Rear axle ratio |
[, 6] | wt | Weight (1000 lbs) |
[, 7] | qsec | 1/4 mile time |
[, 8] | vs | V/S |
[, 9] | am | Transmission (0 = automatic, 1 = manual) |
[,10] | gear | Number of forward gears |
[,11] | carb | Number of carburetors |
Source
Henderson and Velleman (1981), Building multiple regression models interactively. Biometrics, 37, 391–411.
Examples
require(graphics) pairs(mtcars, main = "mtcars data") coplot(mpg ~ disp | as.factor(cyl), data = mtcars, panel = panel.smooth, rows = 1)