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.

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.
Click Calculate.
The results are calculated and a new analysis report is created.