Process / pipelineSampling design

Stratified Sampling

Stratified sampling is a probability sampling design in which the target population is partitioned into non-overlapping, exhaustive subgroups called strata, and independent probability samples are drawn within each stratum. Formalized by William G. Cochran in Sampling Techniques (1977), the method exploits known population structure to reduce variance and guarantee representativeness of all major subgroups, making it a cornerstone of large-scale survey research and official statistics.

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Sources

  1. Cochran, W. G. (1977). Sampling Techniques (3rd ed.). Wiley. ISBN: 978-0-471-16240-7

Related methods

Referenced by

ScholarGateStratified Sampling (Stratified and Cluster Sampling Designs). Retrieved 2026-06-04 from https://scholargate.app/en/survey-methodology/stratified-sampling