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Normality Test Calculator
Upload a CSV file, paste data, or use example data to evaluate normality using Anderson-Darling, Shapiro-Wilk, and Skewness-Kurtosis diagnostics. The Skewness-Kurtosis test remains available and is shown with the other normality tools.
Automatic uses the Freedman-Diaconis rule; override only when a fixed bin count better communicates the data pattern.
Study Report
Download a complete Normality Study PDF report with study information, combined normality test results, descriptive statistics, histogram with data-driven binning, Q-Q plot, interpretation, and decision guidance.