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How To Run A Mood’s Median Test In SigmaXL

What’s A Mood’s Median Test?

The Mood’s Median Test is a hypothesis test that determines whether a statistically significant difference exists between the medians of two or more independent sets of non-normally distributed continuous data. It is useful for determining if a particular strata or group could provide insight into the root cause of process issues.

An example would be if Assembly Line A products have a median production cycle time of 10.3 minutes, Assembly Line B products have a median production cycle time of 9 minutes and Assembly Line C have a median production cycle time of 11.5 minutes and you want to determine if any of the 3 lines truly have different median cycle times from the others or if the difference is just due to random chance.

Learn more about Mood’s Median Tests in the Analyze Phase, Module 4.4.4 of Black Belt Training.

How To Run A Mood’s Median Test In SigmaXL

Download the GoLeanSixSigma.com Mood’s Median Test Data Set for SigmaXL here.

1. Highlight or select the data:

MoodsMedian-SigmaXL-RawData

2. Go to Statistical Tools > Non-Parametric Tests > Mood’s Median

3. Select Next

4. Select Stacked Column Format

MoodsMedian-SigmaXL-Settings

5. Highlight Time to Pick-up order and click “Numeric Data Variable” once to enter the data into the tab. Highlight Time of Day and click “Group Category” once to enter the data into the tab.

6. Click OK:

MoodsMedian-SigmaXL

To learn more about Mood’s Median Test, register for Black Belt Training and review Analyze Phase, Module 4.4.4.

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