# SOCR Statistical Power Analyzer

> Interactive web tool for research-grade statistical power analysis: calculate power, sample size, effect size, and significance level for t-tests, ANOVA, regression, MMRM, SEM, and Monte Carlo simulation designs.

The SOCR Statistical Power Analyzer is a free, browser-based calculator built by the Statistics Online Computational Resource (SOCR) at the University of Michigan. It validates results against G*Power and R, supports both closed-form analytical formulas and Monte Carlo simulation, and renders 3D power surfaces over sample size and effect size.

## Pages
- [Home — Power Analyzer](/): Main calculator with analytical and simulation modes, comprehensive guide, and 3D visualizations.

## Optional
- [SOCR](https://www.socr.umich.edu/): Parent project — open educational resources for statistics and data science.
- [SOCR AI (Bio)Statistical Consultant](https://sda.statisticalcomputing.org/AIConsultant): Companion AI consultant for study design.