topic Re: SURVEYSELECT: SRS Sampling with a MAXSIZE constraint in New SAS User

SURVEYSELECT: SRS Sampling with a MAXSIZE constraint

EthanArenson — Mon, 18 Mar 2019 17:47:59 GMT

My sampling unit is STUDENT, which in the population has the following strata: SCHOOL, GRADE (4 levels), and WRITING_SCORE (4 levels).

I want to draw an SRS from the population. However SCHOOL is not a stratum in the sample. The sample strata are: GRADE and WRITING_SCORE.

How can I use SURVEYSELECT to draw an SRS that enforces the constraint that no more than 5 students are selected from the same SCHOOL?

Re: SURVEYSELECT: SRS Sampling with a MAXSIZE constraint

PGStats — Mon, 18 Mar 2019 18:37:57 GMT

It won't be a SRS then, right?

You could select at most 5 students from each school and then SRS from those.

Re: SURVEYSELECT: SRS Sampling with a MAXSIZE constraint

EthanArenson — Mon, 18 Mar 2019 19:36:26 GMT

Thanks for your correction. If this is no longer an SRS, then what kind of
a sample is it?

There is a certain logic for this. While students are nested within schools
in the population, I'm trying to draw, for example, a sample from all
(i.e., from all schools) 2nd-grade students with a writing score of 1. I
want to continue sampling like this across grades and writing scores, again
subject to the constraint that maxsize =5.