p-value for Kruskal-Wallis test (homogeineity of locations)

Computes p-values for Wilcoxon rank-sum test (two groups) or Kruskal-Wallis test (more levels) using wilcox.test and kruskal.test. Both tests are equivalent but an exact p-value is only returned for the two-group case.

dscr_Kruskal(label_two_groups = "Mann-Whitney test",
  label_more_groups = "Kruskal-Wallis test")