A simple random sample is used to represent the entire data population. A stratified random sample divides the population into smaller groups based on shared characteristics.

Infant formula safety checks can be improved with stratified sampling Date: August 11, 2023 Source: University of Illinois College of Agricultural, Consumer and Environmental Sciences Summary ...

The Canadian Journal of Statistics / La Revue Canadienne de Statistique, Vol. 21, No. 4 (Dec., 1993), pp. 347-357 (11 pages) An Edgeworth expansion for a linear combination of stratum means in ...

The method of simple random sampling (METHOD=SRS) selects units with equal probability and without replacement. Each possible sample of n different units out of N has the same probability of being ...