Overview for Mood’s Median Test

Use Mood’s Median Test when you have one categorical factor and a continuous response, and you are confident that the data for all of the groups have similarly shaped distributions. Using this test, you can do the following:
  • Determine whether the medians of two or more groups differ.
  • Calculate a range of values that is likely to include the difference between population medians.

For example, a researcher wants to determine whether the presentation method that a teacher uses affects students' comprehension of the lecture. The researcher selects 149 students and randomly assigns them to lectures that use one of three different presentation methods: text descriptions, photographs, or cartoons.

Where to find this analysis

  • Mac: Statistics > ANOVA > Mood's Median Test

When to use an alternate analysis

  • If the distributions of the groups do not include outliers, use Kruskal-Wallis Test because it has more power.
  • If you have a randomized block design and want to test the medians, use Friedman Test.
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