What’s A Two-Sample T-Test?

The Two-Sample T-Test is a hypothesis test that determines whether a statistically significant difference exists between the averages of two independent sets of 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 Location A has average sales of $3,567 per month whereas Location B has average sales of $3,843 per month and you want to determine if Location B truly has greater averages sales or the difference is just due to random chance.

Learn more about Two-Sample T-Tests in Analyze Phase, Module 4.3.4 of Black Belt Training.

How To Run A Two-Sample T-Test In Minitab

1. Select Raw Data:

TwoSampleTTest-Minitab-RawData

2. In The Menu Click Stat > Basic Stat > 2- Sample t:

TwoSampleTTest-Minitab-Settings

3. Click on “OK”:

TwoSampleTTest-Minitab

To learn more about Two-Sample T-Tests, register for Black Belt Training and review Analyze Phase, Module 4.3.4.