UNIVARIATE

Number and type of predictor variables

Type of outcome

Null Hypothesis (H_{0})

Test(s)

no predictor variable

normal


onesample ttest

nonnormal


onesample median/
sign test

categorical


onesample ztest for proportions
binomial test


Chisquare goodnessoffit test

no predictors,
no outcomes
(i.e., looking for association or independence among 2 or more variables)

normal


Pearson correlation


factor analysis

one or more nonnormal


Spearman rank correlation

categorical


contingency coefficient


odds ratio

one categorical predictor
(2 categories)

normal


two independent sample ttest
(if independent groups or random assignment to groups)

paired ttest
(if matched samples or repeated measures)

nonnormal


MannWhitney Wilcoxon rank sum test
(if independent groups or random assignment to groups)

Wilcoxon signed ranks test
(if matched samples or repeated measures)

categorical


Chisquare test
(if independent groups or random assignment to groups)

McNemar chisquare test
(if matched samples or repeated measures)

one categorical predictor
(3 or more categories)

normal


Oneway ANOVA
(if independent groups or random assignment to groups)

Repeated Measures ANOVA
(if matched samples or repeated measures)

nonnormal


KruskalWallis test
(if independent samples or random assignment to groups)

categorical


Chisquare test
(if independent samples or random assignment to groups)

one continuous predictor

normal


simple linear regression

nonnormal

transformation

categorical


logistic regression
