random selection of records based on some percentage

[Babloo]

How to select 10% of 'M' and 50% of 'F' from the dataset sashelp.class?

[RW9]

If random number is < than 10 then output, else remove:

http://blogs.sas.com/content/iml/2011/08/24/how-to-generate-random-numbers-in-sas.html

[Ksharp]

check

The SURVEYSELECT Procedure

http://support.sas.com/documentation/cdl/en/statug/63962/HTML/default/viewer.htm#statug_surveyselect...

[Ksharp]

data class;

set sashelp.class;

run;

proc sort data=class;by sex;run;

proc surveyselect data=class samprate=(0.1 0.5) out=want;

strata sex;

run;