Thanks for clear words. We will modify our simulation process. ... View more

Hi Rick, If I run your data step and after an other with a little changing in the second do loop. I changed the distribution to Pois. Why are the C1 and C2 data sets totally different and not only the B2 is changed? data A1 B1 C1; call streaminit(12345); do i = 1 to 1000; x = rand("Normal"); output A1; end; do i = 1 to 5000; x = rand("Normal"); output B1; end; do i = 1 to 100; x = rand("Normal"); output C1; end; run; data A2 B2 C2; call streaminit(12345); do i = 1 to 1000; x = rand("Normal"); output A2; end; do i = 1 to 5000; x = rand("POIS",0.2); output B2; end; do i = 1 to 100; x = rand("Normal"); output C2; end; run; proc compare base=c1 compare=c2; run; thx, Berni ... View more