GLSS-Logo_White

How to Run a Mann-Whitney Test in SigmaXL

What’s a Mann-Whitney Test?

The Mann-Whitney Test is a hypothesis test that determines whether a statistically significant difference exists between the medians of two 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 Pizza Delivery Person A has median delivery time of 15 minutes whereas Pizza Delivery Person B has median delivery time of 17 minutes and you want to determine if Person B is truly slower or if the difference is just due to random chance.

Learn more about Mann-Whitney Tests in Analyze Phase, Module 4.4.3 of Black Belt Training.


How to Run a Mann-Whitney Test in SigmaXL

Download the GoLeanSixSigma.com Mann-Whitney Test Data Set for SigmaXL here.

1. Select Raw Data:

MannWhitney-SigmaXL-RawData

2. Go to Statistical Tools > Non-Parametric Tests > 2 Sample Mann-Whitney:

MannWhitney-SigmaXL-SelectData

3. Select Next:

MannWhitney-SigmaXL-Settings

4. Select Stacked Column Format

5. Highlight Total Order Lead Time and click the “Numeric Data Variable” once to enter the data into the tab.

6. Highlight Weekday vs. Weekend and click “Group Category” once to enter the data into the tab.

7. Click OK:

MannWhitney-SigmaXL

To learn more about Mann-Whitney Tests, register for Black Belt Training and review Analyze Phase, Module 4.4.3.

GLSS is the leading provider of Lean Six Sigma Training & Certification. Our integrated Project-Based Learning approach helps everyone complete Lean Six Sigma projects 3x faster than outdated approaches. Partner with us to create a Culture of Continuous Improvement.
Search

What courses would you like to see from GLSS? Check all that apply.

start training

try it free
ico-arrow

START PROJECT

TRY KURE
white-ico-arrow

START TRAINING

try it
free

START YOUR FREE GREEN BELT TRAINING

Accredited by PMI. 100% Online & Self-Paced.