In SAS, how can I 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.

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Also see:

• During a SAS session, how do I redirect the work files?
• In SAS, how do I make my variable names more descriptive?