cluster random sampling

基本解釋

A survey was conducted among 701 freshmen in one college by cluster random sampling.
採用整群隨機抽樣方法，在某大學抽取701名大學生作爲調查對象。
Methods Cluster random sampling method was employed in this survey, then 2000 families amounting of 7218 people were selected.
方法採用整群隨機抽樣方法，抽取城鄕居民2000戶，共計7218人。
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Methods According with the methods of the forth epidemiologic sampling survey for tuberculosis in our country, the method of stratified cluster random sampling was use in this survey .
方法根據(jù)全國第四次結核病流行病學抽樣調查方案，採用分層整群隨機抽樣方法抽取調查點，然後根據(jù)調查結果進行分析。