是一种将样本单元聚集在一起的随机抽样法。样本群在抽样的某一步骤被抽出。

是一种将样本单元聚集在一起的随机抽样法。样本群在抽样的某一步骤被抽出。的英文翻译

基本释义

• A type of probability sample in which aggregations of sampling units, called clusters, are sampled at some stage in the process.