Priori Power Analysis Calculator
Introduction & Importance
Prior power analysis is a crucial step in designing a clinical trial or any statistical study…
How to Use This Calculator
- Enter the significance level (α) in the range of 0.01 to 0.1.
- Enter the desired power in the range of 0.5 to 1.
- Enter the expected effect size.
- Click ‘Calculate’.
Formula & Methodology
The calculator uses the formula for sample size calculation in a one-sided test…
Real-World Examples
Data & Statistics
| Power | Sample Size |
|---|
Expert Tips
- Always round up the calculated sample size…
- Consider using a power of at least 0.8…
Interactive FAQ
What is the default significance level?
The default significance level is 0.05.