Contrast of parametric and non-parametric tests in two group comaparisons
| Parametric | Non-parametric | |
|---|---|---|
| Assumptions | Normal distribution | Depends on test |
| Uniform variance | ||
| Data | Paired and unpaired data | Depends on test |
| Significance | Assessed | Assessed |
| Small differences | Detected | Missed |
| Size of the difference | Can be calculated | Cannot be calculated |