mtcars {datasets}R Documentation

Motor Trend Car Road Tests

Description

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 (lb/1000)

[, 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)

[Package datasets version 2.13.2 Index]