Overview for Goodness-of-Fit Test for Poisson

Use Goodness-of-Fit Test for Poisson to determine whether your data follow a Poisson distribution. Use this test when you count occurrences, such as the number of defects per unit.

For example, a quality engineer at a mobile phone manufacturer wants to know whether the data on the number of defects per phone follow a Poisson distribution.

Where to find this analysis

To perform a goodness-of-fit test for the Poisson distribution, choose Stat > Basic Statistics > Goodness-of-Fit Test for Poisson.

When to use an alternate analysis

If you have continuous data, such as length, weight, or temperature, and want to determine whether the data follow a normal distribution, use Normality Test.