The proportion of responsive documents in the sample serves ... fixate on a certain sample size or confidence interval for elusion testing as it is to do so for a control set.

If you specify the option METHOD=PPS, PROC SURVEYSELECT selects units with probability proportional to size and without replacement ... For a stratified design, n now denotes the sample size for the ...

A random sample from each stratum would be taken in a number proportional to the stratum’s size compared with the population. These subsets of the strata would then be pooled to form a random ...

This sampling interval is calculated by dividing the population size by the desired sample size ... systematic sampling provides an increased degree of control compared to other sampling ...