A Beginner’s Guide to the Mood’s Median Test in Lean Six Sigma

The Mood’s Median test is a hypothesis test used to determine if there is a significant difference between two or more independent groups. 

This test is also known as the Wilcoxon-Mann-Whitney test. The test is named after John Wilder Tukey, Frederick Mosteller, and Herman Chernoff. It is used to compare two unpaired groups.

This test is non-parametric and does not assume that the data comes from a normal distribution. The test can be used with ordinal or interval data. The median is used as a measure of central tendency for this test. This test is also robust against outliers.

The null hypothesis for this test is that there is no difference between the two groups. The alternative hypothesis is that there is a difference between the two groups.

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