Power Analysis Calculator
Calculate the required sample size for a study given the effect size, significance level, and desired statistical power.
Inputs
Results
Required Sample Size (per group)
32
Total Subjects Needed
32
How to Use This Calculator
- Enter Effect Size (Cohen, Significance Level (α), and Statistical Power (1-β).
- Set Test Type (1=one-sample, 2=two-sample, 3=paired).
- Review Required Sample Size (per group) and Total Subjects Needed.
- Use Z-Alpha (two-tailed) and Z-Beta to inform your decision.
- Use the chart to visualize the results and explore different scenarios by adjusting inputs.
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