Box Plots

The box plot now includes an option to test for differences of means between groups, and also to construct simultaneous confidence intervals for these differences. The multiple comparison tests that are available in SAS/INSIGHT software are

the Pairwise t-test
the Pairwise t-test
the Pairwise Bonferroni method
Dunnett's Test with Control
Hsu's Test for Best
Hsu's Test for Worst.

In addition to a table summarizing the statistics for simultaneous multiple comparison of means, SAS/INSIGHT software provides a graphical technique to help visualize which groups are significantly different from a selected group. Each test is accompanied by a comparison circles plot that graphically illustrates the comparisons.

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