
scale dependent variable

1 nominal independent variable

independent variable has 2 groups

ttest if data is normally distributed
also called: Student's ttest, 2sample ttest, independent ttest

Mann Whitney U if data is not normally distributed
also called: WilcoxonMann Whitney U

paired ttest if data is matched and normally distributed
also called: dependent ttest, match ttest

Wilcoxon if data is matched but not normally distributed
also called: Wilcoxon signed rank test

ttest if data is normally distributed

independent variable has 3+ groups
 1 way ANOVA if data is normally distributed
 KruskalWallis if data is not normally distributed

repeated measures ANOVA if data is matched
also called: withinsubjects ANOVA, oneway ANOVA with repeated measures


2 nominal independent variables

independent variable has 2+ groups

2 way ANOVA
also called: factorial ANOVA

2 way ANOVA


1 scale independent variable

simple regression
also called: simple linear regression, regression, linear model

simple regression

1 ordinal independent variable

simple regression if assumptions are met
also called: simple linear regression, regression, linear model

simple regression if assumptions are met

2+ independent variables

independent variables are scale, ordinal or nominal
 multiple regression

1 independent variable is matched

mixed effect regression
also called: mixed effects model, mixed effect regression, multiple regression with random variable, multiple regression with winthin subjects variable

mixed effect regression



ordinal dependent variable

1 nominal independent variable

independent variable has 2 groups

Mann Whitney U
also called: WilcoxonMann Whitney U

Wilcoxon if data is matched
also called: Wilcoxon signed rank test

Mann Whitney U

independent variable has 3+ groups
 Kruskal Wallis


2+ independent variables

independent variables are scale, ordinal or nominal

ordinal regression (more advanced test)
also called: ordinal logistic regression

ordinal regression (more advanced test)



nominal dependent variable

1 nominal independent variable
 Chi square for association is commonly used

1+ independent variable

dependent variable has 2 groups

binary logistic regression (more advanced test)
also called: binomial regression, binary regression

binary logistic regression (more advanced test)

dependent variable has 2+ nominal groups
 multinomial regression (more advanced test)



no obvious dependent variable

2 nominal variables
 Chi square for association
 Fisher's Exact test

2 ordinal variables

Spearman's rank correlation
also called: Spearman's rho
 Chi square for association if few ordinal categories

Spearman's rank correlation

1 ordinal and 1 scale variable

Spearman's rank correlation
also called: Spearman's rho

Spearman's rank correlation

2 scale variables

Pearson's correlation
also called: Pearson's r

Pearson's correlation
