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 ...

Random sampling ... method, such as a random number generator or random number tables, to select data points from the population. Random sampling is random by design, hence the name. Stratified ...

Suppose that the sample of students described in the previous section was actually selected using stratified random sampling. In stratified sampling, the study population is divided into ...