xmp10.01 {Devore6} | R Documentation

## data from Example 10.1

### Description

The `xmp10.01` data frame has 24 rows and 2 columns.

### Format

This data frame contains the following columns:

strength
  a numeric vector
type
  a factor with levels `A` `B` `C` `D`

### Details

### Source

Devore, J. L. (2003) Probability and Statistics for Engineering and the Sciences (6th ed), Duxbury

### Examples

    data(xmp10.01)
    boxplot(strength ~ type, data = xmp10.01,
        main = "Data from Example (compare Figure 10.1, p. 405)")
    fm1 <- lm( strength ~ type, data = xmp10.01 )  # fit anova model
    qqnorm(resid(fm1), main = "Compare to Figure 10.2, p. 407")
    anova(fm1)     # compare results in Example 10.2, p. 409

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