xmp10.03 {Devore5}R Documentation

data from Example 10.3

Description

The xmp10.03 data frame has 15 rows and 2 columns.

Format

This data frame contains the following columns:

Soiling
a numeric vector
Mixture
a numeric vector

Details

Data from an experiment comparing the degree of soiling for fabric copolymerized with three different mixtures of methacrylic acid.

Source

Devore, J. L. (2000) Probability and Statistics for Engineering and the Sciences (5th ed), Duxbury

(1983), ``Chemical factors affecting soiling and soil release from cotton DP fabric'', American Dyestuff Reporter, 25-30.

Examples

data(xmp10.03)
xmp10.03$Mixture <- factor(xmp10.03$Mixture)
plot(Soiling ~ Mixture, data = xmp10.03, col = "lightgray",
     main = "Data from Example 10.3")
summary(xmp10.03)          # check ranges and balance
fm1 <- lm(Soiling ~ Mixture, data = xmp10.03)
anova(fm1)                 # compare to table shown on p. 412

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