* do-file for Exercise 27.22 of PSLS 3e
version 18 /* works also with versions 13-17 */

import delimited "R:\Chapter 27\ex27_022.csv"
bysort color: summarize beetles, detail
kwallis beetles, by(color)

* additional 1-way ANOVA
oneway beetles color, bonferroni tabulate
display invttail(20,.025/6)