*******************************************************
* Paired t-test/Single sample t-test                  *
*******************************************************
;
DATA WEIGHT;
INPUT WBEFORE WAFTER;
* Calculate WLOSS in the DATA step *;
WLOSS=WAFTER-WBEFORE;  
DATALINES;
200 190
175 154
188 176
198 193
197 198
310 240
245 204
202 178
;
ODS RTF;
PROC MEANS N MEAN T PRT; VAR WLOSS;
TITLE 'Paired t-test example using PROC MEANS';
RUN;
ODS RTF CLOSE;