topic Re: Random weighted mutually exclusive sampling in SAS Procedures https://communities.sas.com/t5/SAS-Procedures/Random-weighted-mutually-exclusive-sampling/m-p/214515#M52857 <HTML><HEAD></HEAD><BODY><P>The basic approach would be to have YEAR as a STRAT variable and then SAMPRATE = (.35 .35 .30)</P><P>However if the ID appears in multiple years then additional steps may be needed. If your data is large enough you may not have any duplicates selected.</P></BODY></HTML> Thu, 02 Apr 2015 00:07:51 GMT ballardw 2015-04-02T00:07:51Z Random weighted mutually exclusive sampling https://communities.sas.com/t5/SAS-Procedures/Random-weighted-mutually-exclusive-sampling/m-p/214514#M52856 <HTML><HEAD></HEAD><BODY><P>Here is a brief description of the problem:</P><P></P><P>I have a dataset containing IDs cand dates. I have assigned the cases to groups based on a year and have 3 such groups. I need to obtain random samples from this dataset in such a way that the 35%,35% and 30% of cases are picked from the three groups respectively and none of the IDs are overlapping. I intended to use PROC Surveyselect simple random sampling for this but I don't know how to assign the percentages/weights to the groups. Kindly advise.</P></BODY></HTML> Wed, 01 Apr 2015 23:46:08 GMT https://communities.sas.com/t5/SAS-Procedures/Random-weighted-mutually-exclusive-sampling/m-p/214514#M52856 sanketshah07 2015-04-01T23:46:08Z Re: Random weighted mutually exclusive sampling https://communities.sas.com/t5/SAS-Procedures/Random-weighted-mutually-exclusive-sampling/m-p/214515#M52857 <HTML><HEAD></HEAD><BODY><P>The basic approach would be to have YEAR as a STRAT variable and then SAMPRATE = (.35 .35 .30)</P><P>However if the ID appears in multiple years then additional steps may be needed. If your data is large enough you may not have any duplicates selected.</P></BODY></HTML> Thu, 02 Apr 2015 00:07:51 GMT https://communities.sas.com/t5/SAS-Procedures/Random-weighted-mutually-exclusive-sampling/m-p/214515#M52857 ballardw 2015-04-02T00:07:51Z