Normal Distribution Calculator
Normal Distribution: a planned Super Calculator tool. Covers mean mu and standard deviation sigma. Stub page while the tool and its worked example are prepared.
Normal Distribution Calculator is a planned calculator in the mathematics section of Super Calculator, covering statistics and probability.
What this calculator will compute
Inputs: mean mu, standard deviation sigma, bound x or bounds, direction (below, above, between and outside).
Outputs: probability, z score, percentile, inverse value for a target probability and curve points.
Formula, recorded as scope and not yet verified against a primary source: Density f(x) = (1/(sigma*sqrt(2pi))) * exp(-(x-mu)^2/(2sigma^2)); cumulative probability Phi((x-mu)/sigma) computed from erf. Inverse CDF for a target probability by the Acklam or Wichura rational approximation.
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.