Hello Community,   I need to get a random sample of 500 records out of 1 million records in which I have SEGMENT_MANAGED is either YES OR NO but I want 20 % SEGMENT_MANAGED = YES(100 records) and 80% SEGMENT_MANAGED = NO(400 records).    The code is given below that I have tried but this gave me 250 records (50%) each SEGMENT_MANAGED =YES or NO.:- proc surveyselect data = WORK.nps_scrubbed_base_MOB out= WORK.nps_sample_file_cad_MOB method= srs sampsize= 250; strata SEGMENT_MANAGED; run; Could you please someone help me to find out how to do a random sampling with different weighted according to Strata?? ... View more