## References

Kitchens, L. J. (2003) *Basic Statistics and Data Analysis*.
Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

## Examples

```
boxplot(response ~ group, data = Groupabc,
col = c("red", "blue", "green"))
anova(lm(response ~ group, data = Groupabc))
#> Analysis of Variance Table
#>
#> Response: response
#> Df Sum Sq Mean Sq F value Pr(>F)
#> group 2 572.8 286.42 1.6106 0.2121
#> Residuals 41 7291.0 177.83
```