Stratified sampling
volume
British pronunciation/stɹˈatɪfˌaɪd sˈamplɪŋ/
American pronunciation/stɹˈæɾɪfˌaɪd sˈæmplɪŋ/

"stratified sampling"的定义和意义

Stratified sampling
01

the population is divided into subpopulations (strata) and random samples are taken of each stratum

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