table.b3 {MPV}R Documentation

Table B3

Description

The table.b3 data frame has observations on gasoline mileage performance for 32 different automobiles.

Usage

data(table.b3)

Format

This data frame contains the following columns:

y
Miles/gallon
x1
Displacement (cubic in)
x2
Horsepower (ft-lb)
x3
Torque (ft-lb)
x4
Compression ratio
x5
Rear axle ratio
x6
Carburetor (barrels)
x7
No. of transmission speeds
x8
Overall length (in)
x9
Width (in)
x10
Weight (lb)
x11
Type of transmission (1=automatic, 0=manual)

Source

Montgomery, D.C., Peck, E.A., and Vining, C.G. (2001) Introduction to Linear Regression Analysis. 3rd Edition, John Wiley and Sons.

References

Motor Trend, 1975

Examples

data(table.b3)
attach(table.b3)
y.lm <- lm(y ~ x1 + x6)
summary(y.lm)
# testing for the significance of the regression:
y.null <- lm(y ~ 1)
anova(y.null, y.lm)
# 95
predict(y.lm, newdata=data.frame(x1=275, x6=2), interval="confidence")
# 95
predict(y.lm, newdata=data.frame(x1=275, x6=2), interval="prediction")
detach(table.b3)

[Package MPV version 1.25 Index]