This contains some simulations of the rank-correspondence between parametric tests and non-parametric equivalents:

- Kruskal-Wallis is (almost) a one-way ANOVA on ranked data
- Mann-Whitney is (almost) an independent-sample t-test on ranks
- Spearman is (almost) a Pearson on ranks
- Wilcoxon is (almost) a one-sample t-test on signed ranks