1. Only 1 Group
1.1. Categorical
1.1.1. Chi-square goodness-of-fit
1.2. Ordinal
1.2.1. One-sample median
1.3. Interval
1.3.1. One-sample median
1.3.2. One-sample t-test (normally distributed data)
2. Independent Groups. (1DV, 1 IV variable)
2.1. 2 Groups
2.1.1. Categorical
2.1.1.1. Chi-square test
2.1.1.2. Fisher’s exact test
2.1.2. Ordinal
2.1.2.1. Wilcoxon-Mann Whitney test
2.1.3. Interval
2.1.3.1. Wilcoxon-Mann Whitney test
2.1.3.2. 2 independent sample t-test (normally distributed data)
2.2. 2+ Groups
2.2.1. Categorical
2.2.1.1. Chi-square test
2.2.2. Ordinal
2.2.2.1. Kruskal Wallis
2.2.3. Interval
2.2.3.1. Kruskal Wallis
2.2.3.2. One-way ANOVA (normally distributed data)
3. Related groups. (1 DV, 1 IV variable)
3.1. 2 Groups
3.1.1. Categorical
3.1.1.1. McNemar's test
3.1.2. Ordinal
3.1.2.1. Wilcoxon signed ranks test
3.1.3. Interval
3.1.3.1. Wilcoxon signed ranks test
3.1.3.2. Paired t-test (normally distributed data)
3.2. 2+ Groups
3.2.1. Categorical
3.2.1.1. Repeated Measures Logistic Regression (Binomial outcome)
3.2.2. Ordinal
3.2.2.1. Friedman test
3.2.3. Interval
3.2.3.1. Friedman test
3.2.3.2. One-way Repeated Measures ANOVA (normally distributed data)
4. Some Other Cases
4.1. Time-to-Event Data
4.1.1. Survival Analysis
4.2. Crossover Design
4.2.1. Factorial ANOVA