英语词汇“stratified sample”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

stratified sample

noun Statistics

A sample that is drawn from a number of separate strata of the population, rather than at random from the whole population, in order that it should be representative.The researchers limited their review to a random stratified sample of articles published during 1997-1998....

This project involves approximately 250 camps selected from a representative stratified sample, data analysis, and the development for distribution of training materials and research monographs.
To that end, the survey relies upon a stratified sample of the undergraduate population in the United States, controlling for factors such as gender, race/ethnicity, and class standing.

单词	stratified sample
释义	stratified sample noun Statistics A sample that is drawn from a number of separate strata of the population, rather than at random from the whole population, in order that it should be representative.The researchers limited their review to a random stratified sample of articles published during 1997-1998.... This project involves approximately 250 camps selected from a representative stratified sample, data analysis, and the development for distribution of training materials and research monographs. To that end, the survey relies upon a stratified sample of the undergraduate population in the United States, controlling for factors such as gender, race/ethnicity, and class standing.
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