Power and Sample Size Calculator
Purpose
Provides statistical power analysis and sample size determination capabilities for experimental design.
Capabilities
- Power analysis for common tests (t-test, ANOVA, chi-square)
- Effect size calculation
- Sample size estimation
- Simulation-based power analysis
- Multi-level model power analysis
- Sequential analysis design
Usage Guidelines
- Effect Size: Specify meaningful effect sizes
- Power Target: Set appropriate power levels (typically 0.80)
- Type I Error: Control alpha appropriately
- Simulation: Use simulation for complex designs
Tools/Libraries
- G*Power
- pwr (R)
- statsmodels