| A | B |
| Difference b/w means of 2 independent groups p = >,05 | Mann-Whitney U |
| Difference b/w means of 2 related groups or scores | Wilcoxon Signed-Rank Test |
| Difference b/w means of 3 or more independent groups ( IV with 3 or more levels) Post hoc | Kruskal-Wallis Test |
| Difference b/w mean scores across set of related scores | Freidman Test (Ordinal Data) |
| Differences in observed frequencies of variable when mean not possible (independent samples p ->.05) | Chi Square - Categorical Data |
| Differences in observed frequencies of variable paired samples | McNemar's Test - Categorical Data |
| Relationship b/w 2 variables - strength | Spearman's Rho |
| Differences between cats and dogs | The PET Test |