Power Analysis

The Power Analysis module implements the techniques of statistical power analysis, sample size estimation, and advanced techniques for confidence interval estimation.

The main goal of the first two techniques is to allow you to decide, while in the process of designing an experiment, (a) how large a sample is needed to enable statistical judgments that are accurate and reliable, and (b) how likely your statistical test will be to detect effects of a given size in a particular situation. The third technique is useful in implementing objectives (a) and (b) above, and in evaluating the size of experimental effects in practice.