Table 3 Power analysis
F tests – ANOVA: Fixed effects, omnibus, one-way | ||
Analysis: | A priori: Compute required sample size | Â |
Input: | Effect size f | 0.25 |
|  | α error probability | 0.05 |
|  | Power (1-β error probability) | 0.80 |
| Â | Number of groups | 3 |
Output: | Non-centrality parameter λ | 9.938 |
| Â | Critical F | 3.054 |
| Â | Numerator df | 2 |
| Â | Denominator df | 156 |
| Â | Total sample size | 159 |
| Â | Actual power | 0.805 |