Q&A: Entering t test data

Is it possible to define the two groups with a grouping variable?

No. The two groups must be defined by columns. Enter data for one group into column A and the other group into column B.

Can I enter data in lots of columns and then choose two to compare with a t test?

Yes. After you click Analyze, you'll see a list of all data sets on the right side of the dialog. Select the two you wish to compare.

Can I enter data as mean, SD (or SEM) and N?

Yes. Follow this exampleto see how. It is impossible to run a paired t test or a nonparametric test from data entered as mean, SD (or SEM) and N. You can only choose an unpaired t test.

Can I enter data for many t tests on one table, and ask Prism to run them all at once?

No