UITS

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:

  PROC SORT DATA=deer;
    BY area;
  
  PROC TTEST;
    CLASS female;
    VAR weight;
    BY area;
  RUN;

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 the variable(s) to be compared.

If you have questions about using statistical and mathematical software at Indiana University, email UITS Research Analytics. Research Analytics is located on the IU Bloomington campus at Woodburn Hall 200, and is open for consultation by appointment Monday-Friday 9am-5pm.

This is document afpk in the Knowledge Base.
Last modified on 2014-06-25.

  • Fill out this form to submit your issue to the UITS Support Center.
  • Please note that you must be affiliated with Indiana University to receive support.
  • All fields are required.

Please provide your IU email address. If you currently have a problem receiving email at your IU account, enter an alternate email address.

  • Fill out this form to submit your comment to the IU Knowledge Base.
  • If you are affiliated with Indiana University and need help with a computing problem, please use the I need help with a computing problem section above, or contact your campus Support Center.

Please provide your IU email address. If you currently have a problem receiving email at your IU account, enter an alternate email address.