cluster random sampling

常见例句

A survey was conducted among 701 freshmen in one college by cluster random sampling.
采用整群随机抽样方法，在某大学抽取701名大学生作为调查对象。
Methods Cluster random sampling method was employed in this survey, then 2000 families amounting of 7218 people were selected.
方法采用整群随机抽样方法，抽取城乡居民2000户，共计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 .
方法根据全国第四次结核病流行病学抽样调查方案，采用分层整群随机抽样方法抽取调查点，然后根据调查结果进行分析。