chi-square goodness-of-fit test chi-square test of independence contingency table Mann–Whitney U test nonparametric test parametric test single-sample test Spearman rank-order correlation coefficient | a nonparametric test that examines the relationship between two ordinal-level variables or one ordinal and an interval/ratio variable. a table showing the degree to which a case’s value on the outcome variable depends on its category on the explanatory variable. a statistical test for use with nominal- or ordinal-level outcome variables, and for which assumptions about the shape of the population don’t have to be met. a nonparametric test used to determine whether two or more populations of cases differ on a categorical (nominal- or ordinal-level) outcome variable. a statistical test used to compare the results in a sample to a known population value. a nonparametric test used to compare two independent samples on an ordinal-level outcome variable that utilizes ranking. a nonparametric, single-sample test used to compare the distribution of a categorical (nominal- or ordinal-level) outcome variable in a sample to a known population value. a statistical test for use with interval- or ratio-level outcome variables, and for which assumptions about the shape of the population must be met. |