MPV (version 1.38)

p4.19: Data Set for Problem 4-19

Description

The p4.19 data frame has 14 observations on a designed experiment studying the relationship between abrasion index for a tire tread compound and three factors.

Usage

data(p4.19)

Format

This data frame contains the following columns:

x1

hydrated silica level

x2

silane coupling agent level

x3

sulfur level

y

abrasion index for a tire tread compound

Source

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

References

Derringer and Suich (1980) Simultaneous Optimization of Several Response Variables. Journal of Quality Technology.

Examples

data(p4.19)
attach(p4.19)
y.lm <- lm(y ~ x1 + x2 + x3)
summary(y.lm)
plot(y.lm, which=1)
y.lm <- lm(y ~ x1)
detach(p4.19)