Calculate Sample Size for Mediation Analysis
Calculating sample size for mediation analysis is crucial for ensuring your study has enough power to detect meaningful effects…
- Enter the effect size…
- Select the significance level…
- Enter the desired power…
- Click ‘Calculate’…
The sample size calculation is based on the formula by Fritz and MacKinnon (2007)…
| Effect Size | Significance Level | Power | Sample Size |
|---|---|---|---|
| 0.2 | 0.05 | 0.8 | 1280 |
| Method | Effect Size | Significance Level | Power | Sample Size |
|---|---|---|---|---|
| Preacher & Hayes (2008) | 0.3 | 0.05 | 0.8 | 144 |
| Fritz & MacKinnon (2007) | 0.3 | 0.05 | 0.8 | 128 |
- Consider using a larger sample size to account for potential attrition…
- Always round up to the nearest whole number when calculating sample size…
What is mediation analysis?
Mediation analysis is a statistical method used to determine how an independent variable is related to a dependent variable…