T-Test for Independent Samples by Variables - Quick Tab

Select the Quick tab of the T-Test for Independent Samples by Variables dialog box to access options to quickly review the results of a t-test for independent samples when the data have been organized by variables.

For more advanced results, use the Advanced tab.

Summary: T-tests

Click the Summary:T-tests button to compute the t-tests for independent samples and display the results in a spreadsheet.

The detail and formatting of the results depend on your selections in the Options tab.

Box & whisker plots

Click the Box & whisker plots button to produce a cascade of box and whisker plots; one box plot for each variable (group) in the first list with each variable (group) in the second list will be produced. Box and whisker plots summarize the distribution of the dependent variable for each group. Specifically each group will be represented by one box and whisker component, which is made up of three parts:

• A central circle to indicate the mean;
• A box to indicate the mean plus/minus the standard deviation.
• Whiskers around the box to indicate the mean plus/minus 1.96*standard deviation (hence if your data follows the normal distribution, 95% of your data should fall within the whiskers).