I tried it and had not worked.  I went back to basics using the SASHELP data and got it to work.  That should help me find out what is going on.  Just sharing that code.  Once I figure it out, I'll share it. Data Mybweight; set sashelp.bweight; run; proc sort Data=Mybweight; by MomEdLevel; run; proc boxplot data = Mybweight; plot Weight * MomEdLevel; run; /* create a set for strata totals for surveymeans */ data strattot; input MomEdLevel _total_; cards; /* indicates that datalines follow */ 0 17449 1 12129 2 12449 3 7973 ; proc surveymeans data=Mybweight total = strattot nobs mean sum clm clsum ; stratum MomEdLevel ; var Weight ; run; proc surveyselect data=mybweight out=srssamplebwt method=srs n=100 ; run; proc surveyselect data=mybweight out=propsamplebwt method=srs samprate=(0.4,0.25,0.25,0.1) seed=91118; strata MomEdLevel; run; proc print data=propsamplebwt(obs=10); run; proc freq data=propsamplebwt; TABLES MomEdLevel; run; ... View more

Thanks for catching that.  That did reproduce the error I am facing with the large data file I am working with. I am trying to understand the strata statement.  If I can run proc frequency using the column name why does it not work with the strata statement as the documentation suggests it should. title 'Simple Random Sampling'; proc surveyselect data=industry2 method=srs n=15 seed=1953 out=nostratasample; run; /*above code works on data read from a file */ proc Freq data=industry2; table stratum; run; /*code above produced output that showed 10 blank rows but had 373 rows in 5 strata */ title 'Stratified Sampling equal allocation'; proc surveyselect data=industry2 method = srs n=10 seed=1953 out=propsample; strata stratum; run; /* code shown above produces the error reproduced in the small sample*/ ... View more