## Hypothesis Testing Power

Power of a statistical test.

Gallery of R Web Apps

Power of a statistical test.

Enables interactive computation of the sample size required or evaluation of the power for a test.

Demonstration of the relationship of statistical power, effect size, and false positives

A simple web application that will allow you to calculate a sample size to estimate a mean or a proportion.

Interactive calculator to illustrate the power of a statistical hypothesis test for a two-sided symmetrical test.