To test if the variation among column medians of tumor volumes in the six treatment groups (n = 20) was significantly greater than expected by chance, nonparametric Kruskal-Wallis ANOVA was performed for data from each of the 4 weeks after injection of tumor cells.
![[This page as RDF]](http://data.gesis.org/somesci/static/rdf-icon.gif){kind=icon}