Simon Fraser University7 年
Stratified Sampling
title1 'Customer Satisfaction Survey'; title2 'Stratified Sampling'; proc surveyselect data=Customers method=srs n=15 seed=1953 out=SampleStrata; strata State Type; run; Figure 63.5 displays the ...
Simon Fraser University7 年
Sample Selection Methods
PROC SURVEYSELECT provides a variety of methods for selecting probability-based random samples. With probability sampling, each unit in the survey population has a known, positive probablity of ...