The following PROC SURVEYSELECT statements select a probability sample of customers from the Customers data set using simple random sampling. title1 'Customer Satisfaction Survey'; proc surveyselect ...

A sample to be representative of a population must be random. In a random sample, the probability of ending up in the sample is the same for each element of a population. An example of a simple random ...

A nice characteristic of a Sobol is that the observations are equally spaced apart. That means that there is no error due to ...