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High-Yield Statistical Tests Reference
| Test Type |
Comparison Focus |
| Chi-square (χ²) |
Comparing proportions/percentages between categorical groups. |
| t-Test (Independent) |
Comparing the means of 2 independent groups. |
| Paired t-Test |
Comparing means from the same group at two different times. |
| ANOVA |
Comparing the means of 3 or more independent groups. |
| Pearson Correlation |
Linear relationship between two continuous variables (-1 to +1). |
| Meta-analysis |
Pools data from multiple studies to increase power. |
Mnemonics & Tips:
* Chi-Square: Chi for Categorical (Counts/Proportions).
* t-Test: T for Two groups (Means).
* ANOVA: ANalysis Of VAriance (3+ groups).
* Correlation: Relationship between 2 continuous numbers (e.g., Weight vs BP).