NOMINAL | ORDINAL | INTERVA/RATIO | |
NOMINAL | Chi square | <---------- | "t" test or
analysis of variance |
(ANOVA) | |||
ORDINAL | ^ | Spearman's Rank Order Correlation | <--- ^T |
INTERVAL/ RATIO | "t" test or analysis of variance (ANOVA) | <------- ^ | Pearson's Correlation |
(Correlation) |