Stratified random sample: What’s efficient?

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In a previous blog, Random Sampling: What’s Efficient?, I discussed the efficiency of various techniques for selecting a simple random sample from a large SAS dataset.  PROC SURVEYSELECT easily does the job: proc surveyselect data=large out=sample method=srs /* simple random sample */ rate=.01; /* 1% sample rate */ run; Note: […]

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This post was kindly contributed by SAS Learning Post - go there to comment and to read the full post.