- Mann-whitney U = test of difference, independent data, used for ordinal measurements and used with interval data or ratios converted to ordinal data
- Wilcoxon signed rank = test of difference, for related data, ordinal measurements used with interval or ratio measurements converted to ordinal
- Chi-squared = test of association, independent data, nominal level, studies associations categories into rows/columns and compares frequencies
- Binominal sign = test of difference for related data, nominal measurement, examines direction or difference between pairs of scores
- Spearman's rho = test of correlation, for pairs of scores used for ordinal measurement, interval or ratio measurement converted to ordinal level
Type 1 error = rejecting a null hypothesis when it's true
Type 2 error = accepting a null hypothesis when it's not true
~ = approximate to
oc = proportional to