https://manuals.pqstat.pl/ 2026-06-27T08:13:07+00:00 https://manuals.pqstat.pl/ https://manuals.pqstat.pl/lib/tpl/dokuwiki/images/favicon.ico text/html 2022-02-12T16:24:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://manuals.pqstat.pl/en:statpqpl:porown3grpl:nparpl Non-parametric tests The Kruskal-Wallis ANOVA The Kruskal-Wallis one-way analysis of variance by ranks (Kruskal 1952 ; Kruskal and Wallis 1952 ) is an extension of the U-Mann-Whitney test on more than two populations. This test is used to verify the hypothesis that there is no shift in the compared distributions, i.e., most often the insignificant differences between medians of the analysed variable in ( text/html 2022-02-12T16:23:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://manuals.pqstat.pl/en:statpqpl:porown3grpl:parpl Parametric tests The ANOVA for independent groups The one-way analysis of variance (ANOVA for independent groups) proposed by Ronald Fisher, is used to verify the hypothesis determining the equality of means of an analysed variable in several (