In SAS, how can I conduct a t-test on data sorted by variables?

In SAS, to conduct a t-test on data sorted by variables, use the BY statement in the TTEST procedure. The following example tests gender difference in weight in each area:

You must sort the data by the variable area before using the BY statement in PROC TTEST. The CLASS statement specifies a binary group variable and the VAR statement indicates variable(s) to be compared.

For more information about statistical and mathematical software, email the UITS Stat/Math Center, visit the center's web page, or phone 812-855-4724 (IUB) or 317-278-4740 (IUPUI). The center is located in Bloomington at 410 N. Park Avenue, and is open for consultation by appointment Monday-Friday 9am-5pm.

Comments/Questions/Corrections