Statistical Power Calculator
Statistical Power: a planned Super Calculator tool. Covers test type and effect size. Stub page: the tool, its formula and a worked example are not published.
Statistical Power Calculator is a planned calculator in the mathematics section of Super Calculator, covering statistics and probability.
What this calculator will compute
Inputs: test type, effect size, sample size per group, alpha and tail selection.
Outputs: achieved power, beta (type II error rate), required n for a target power and power curve points.
Formula, recorded as scope and not yet verified against a primary source: Power = 1 - beta = P(reject H0 | H1 true), computed from the noncentral distribution of the test statistic. For a two-sample t test, the noncentrality parameter is delta = d * sqrt(n/2) and power is the area of the noncentral t beyond the critical value.
Status
This page is a stub. The calculator is not built, no figure on this page has been verified against the authority that sets it, and nothing here should be used to make a decision. The page exists so that the site structure is complete and so that articles can link this concept on first mention.
The stub carries noindex, nofollow and is excluded from the sitemap.