Q: Which statistical test should I use for my research question?

Research Design: It determines whether you’re going to compare groups, test associations, or predict an outcome.

Types of Variables:

• Categorical: for association, use chi-square tests.
• Continuous: for comparison purposes, utilize t-tests or ANOVA.
• Correlational: Non-parametric tests may be Mann-Whitney or Kruskal-Wallis.

It is all about:

• Group Comparison: t-tests (for 2 groups) or ANOVA (for 3+ groups).
• Testing Association: Pearson’s correlation or chi-square tests.
• For Prediction Outcome: Regression analysis.

Assumptions: Set all to be within the assumption of normality, homogeneity, and so on, as required by the selected test.