Power Analysis Unequal Sample Size Calculator
Introduction & Importance
Power analysis for unequal sample sizes is a crucial step in designing a study with sufficient statistical power…
How to Use This Calculator
- Enter the desired significance level (α).
- Enter the desired power (1 – β).
- Enter the sample sizes for both groups (n1 and n2).
- Click ‘Calculate’.
Formula & Methodology
The formula used in this calculator is based on the work of Cohen (1988)…
Real-World Examples
Data & Statistics
Expert Tips
- Always ensure your sample sizes are large enough to detect meaningful effects.
- Consider using a power analysis tool before starting your study…
Interactive FAQ
What is statistical power?
Statistical power is the probability that a study will detect an effect when there is one…
Power Analysis for Unequal Sample Sizes – Penn State University