Normal Probability Plot

You have a set of data and would like to know if the data are normally distributed.  Our SPC for Excel software contains the normal probability plot to help you determine this.  You plot the points and decide if the points lie along the straight line.  If they do, the data are normally distributed.

The software also offers four normality tests:

  • Anderson-Darling
  • Kolmogrov-Smirnov
  • Lilliefors
  • Shapiro-Wilk

For each test, the software calculates the metric and the associated p-value to help you decide if the data are normally distributed

Watch a Video Describing How the Anderson-Darling Statistic Works

Join the 100,000+ who are using SPC for Excel to understand their processes.

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