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 ...

The method of systematic ... or n h /N h for stratified sampling. If you specify the sampling rate (or the stratum sampling rates) with the SAMPRATE= option, PROC SURVEYSELECT uses the inverse of the ...

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 ...