Shapiro-Wilk Test Calculator

Evaluate dataset normality mathematically

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Raw Data (Comma/Newline Separated)

For highest accuracy, use sample size (3 ≤ N ≤ 50).

Significance Level (α)

Normally Distributed ✅

The null hypothesis is retained. The data follows a normal distribution (p > α).

Test Statistic (W)

0.3434

P-Value

0.3335

Sample Size: N=8Mean: 13.22

*Results are computed using a normalized web-safe approximation structure loosely based on Royston's algorithms. Extremely large datasets (N > 50) may differ slightly from pure statistical packages like R or SPSS.

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About Shapiro-Wilk Test Calculator

The Shapiro-Wilk test evaluates the normality of a given array of numbers. By pasting a comma or newline-separated list of raw data points, this calculator maps expected order statistics and calculates the W value and approximate P-Value to determine if the sample significantly deviates from a standard normal distribution.

Shapiro-Wilk Test Calculator Features

Accepts up to 5000 raw data points
Approximates W-Stat and P-Value instantly
Visual rejection/retention logic

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