Trying a different statistical test
When you are unsure if the assumptions are met you can try a more robust statistical procedure. For example, the Welch t test is a test for a difference in mean that doesn't have the assumption of equality of variances like the Student t test.
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On the Analyse-it ribbon tab, in the
Report group, click
Clone.
The dataset worksheet and analysis task pane are displayed.
- On the Distribution analysis task pane, in the Location panel, in the Test drop-down list, select Welch t test.
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Click Calculate.
The results are calculated and a new analysis report is created.