Shapiro-Wilk Test

Use: The Shapiro-Wilk test is a statistical test used to assess whether a given sample of data follows a normal distribution. It is particularly effective for relatively small sample sizes.

Example: Checking if the scores of a standardized test in a population follow a normal distribution.

Column Requirement: Continuous data.


  1. Select a column with continuous data.

  2. Perform the Shapiro-Wilk test to check for normality.

  3. Evaluate the test statistic and associated p-value.

  4. A low p-value (<0.05) indicates deviation from normality.

  5. Normality assumption is violated if the p-value is less than the chosen significance level.

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