Stratification is a statistical sampling method that divides a population into mutually exclusive, internally homogeneous subgroups called strata, then independently samples from each stratum. Parameters: (1) strata must be exhaustive and non-overlapping, (2) sampling within each stratum may use simple random or systematic sampling, (3) stratum weights may reflect population proportions (proportional stratification) or be equal (disproportional stratification). Persistence mechanism: codified in statistical textbooks, taught as standard methodology in research methods courses, and implemented in survey design software. [formal: stratificare | substrate: behavior | horizon: hours | explicit: yes | epoch: 0.01]
Accepted ontology entry
stratification
Stratification is a statistical sampling method that divides a population into mutually exclusive, internally homogeneous subgroups called strata, then independently samples from each stratum. Parameters: (1) strata must be exhaustive and…
Definition
Why it is in scope
A statistical sampling technique in which a population is divided into mutually exclusive, internally homogeneous subgroups (strata) and samples are drawn from each stratum. Human-made as a methodological procedure, designed to reduce sampling error and ensure representation across key dimensions of a population.
Names and aliases
- stratificationen · CANONICAL
Relations from this entry
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Stratification is a specific kind of sampling technique — the population is divided into strata and sampled from each. Specific→general per Law 9: a competent speaker would call stratification 'a sampling method'. Nearest kind is sampling; no intervening rung on the ladder.
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Stratification is a specific kind of hierarchy — a ranked layering of entities (social, economic, organizational) into ordered tiers. Classification groups by shared attributes; stratification ranks by relative position. A competent speaker in social theory would call stratification 'a type of hierarchy.'
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Record identity
- Created
- Jul 22, 2026, 6:56 PM UTC
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- bda6889bb43a48db6227aeeb0bc740cc05339deca6bf15cf43468e24091d4d2e