Table 2.
Overview of the minimal detectable effect size dav with a total sample size of 150 participants (ppt) to reach a power of 80% for different values of correlation between the repeated measures (not applicable for the independent samples t-test). Results are based on 5000 simulations.
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|---|---|---|---|---|
| SETTING | N | CORRELATION | ||
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| r = 0.3 | r = 0.5 | r = 0.7 | ||
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| Paired t-test | Same 150 ppt in both conditions | 0.27 | 0.23 | 0.18 |
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| Independent t-test | Different 75 ppt per group | 0.46 | ||
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| ANOVA 2 × 2 rep. meas. | Same 150 ppt in all 4 conditions | 0.39 | 0.33 | 0.26 |
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| ANOVA 2 × 2 split-plot | Different 75 ppt per group | 0.54 | 0.46 | 0.36 |
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