[ /KRUSKAL-WALLIS =var_listBY var (lower,upper) ]

The Kruskal-Wallis test is used to compare data from an
arbitrary number of populations. It does not assume normality.
The data to be compared are specified by `var_list`.
The categorical variable determining the groups to which the
data belongs is given by `var`. The limits `lower` and
`upper` specify the valid range of `var`.
If `upper` is smaller than `lower`, the PSPP will assume their values
to be reversed. Any cases for which `var` falls outside
[`lower`, `upper`] are ignored.

The mean rank of each group as well as the chi-squared value and
significance of the test are printed.
The abbreviated subcommand `K-W`

may be used in place of
`KRUSKAL-WALLIS`

.