从你数据的形式上看,我觉得符合两独立样本、或配对样本,的t检验方法。下列3种方法应该都可以:
1,PAIRED -TTEST:
PROC TTEST DATA=a;
PAIRED x * y;
RUN;
2,univariate :
data a1;
set a;
diff= y - x;
run;
proc univariate data=a1 ;
var diff;
run;
3,means :
data a1;
set a;
diff= y - x;
run;
proc means data=a1 mean t probt clm;
var diff;
run;