DATA MY;
array x(1000) x1-x1000;
array y(1000) y1-y1000;
do i=1 to 1000;
do j=1 to 1000;
x(i)=rannor(0);
y(j)=rannor(0);
end;
end;
a=mean(of x1-x1000);
b=std(of x1- x1000);
c=mean(of y1-y1000);
d=std(of y1-y1000);
output;
%MACRO MY2;
%do i=1 %to 10;
proc print ;
var a b c d ;
run;
%end;
%mend MY2;
%MY2;
为什么10个结果是一样的啊,求教高手帮忙看下 万分感谢!!!!!!