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 ...

This method will reduce the overall cost of your ... Random sampling is random by design, hence the name. Stratified sampling relies on choosing specific samples from subgroups in a semi-random ...

If you request a stratified sample design with a STRATA statement and specify the CERTSIZE ... requests simple random sampling, which is selection with equal probability and without replacement. See ...

A stratified lamellar composite build up was ... Guidelines are also provided for the layered method. A single, double or four stage method can be employed depending upon the amount of available ...