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 ...

However, traditional methods often fail to capture ... To address these shortcomings, the research team designed a stratified ...

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 ...