Kruskal-Wallis test: BASIC computer program to perform nonparametric one-way analysis of variance and multiple comparisons on ranks of several independent samples
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Abstract
Multiple t tests at a fixed p level are frequently used to analyse biomedical data
where analysis of variance followed by multiple comparisons or the adjustment of the
p values according to Bonferroni would be more appropriate. The Kruskal-Wallis test
is a nonparametric 'analysis of variance' which may be used to compare several independent
samples. The present program is written in an elementary subset of BASIC and will
perform Kruskal-Wallis test followed by multiple comparisons between the groups on
practically any computer programmable in BASIC.