Normality Test Calculator (Shapiro Wilk)
Normality Test Calculator (Shapiro Wilk): a planned Super Calculator tool. Stub page: the tool, its formula and a worked example are not published yet.
Normality Test Calculator (Shapiro Wilk) is a planned calculator in the mathematics section of Super Calculator, covering statistics and probability.
What this calculator will compute
Inputs: data column, alpha, alternative test selection (Anderson-Darling and Kolmogorov-Smirnov).
Outputs: W statistic, p value, skewness, kurtosis, normality decision and Q-Q plot points.
Formula, recorded as scope and not yet verified against a primary source: W = (sum a_i x_(i))^2 / sum((x_i - xbar)^2), where the coefficients a_i derive from the expected values and covariance matrix of standard normal order statistics. p value from the Royston (1995) 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.