data sasuser.mean_uni;
array u(32) u1-u32;
do sample=1 to 1000;

   do i = 1 to 32; u(i) = ranuni(0); end;

   mean_2u =  sum(u1,u2)/2;
   mean_3u =  sum(u3,u4,u5)/3;
   mean_4u =  sum(u6,u7,u8,u9)/4;
   mean_5u =  sum(u10,u11,u12,u13,u14)/5;
   mean_6u =  sum(u15,u16,u17,u18,u19,u20)/6;
   mean_12u = sum(u21,u22,u23,u24,u25,u26,u27,u28,u29,u30,u31,u32)/12;

   output;

end;
run;