Adding connecting letters after Kruskal Wallis and Steel-Dwass post-hoc pairwise testing
Greetings all, I'm wanting to produce connecting letters (e.g., a, b, c, etc.) to signify statistically significant differences and similarities among pairwise comparisons of groups after Kruskal-Wallis testing and post-hoc Steel-Dwass analysis (non-parametric equivalents of one way ANOVA and Tukey's HSD tests). These are readily supplied when ANOVAs and student's t-test / Tukey's tests are perf...