cluster sampling [统计] 整群抽样 ; 类集抽样 ; 群集抽样

Simple cluster sampling 简单整群抽样 ; 单纯整群抽样

stratified cluster sampling 分层整群抽样 ; 采分层集束抽样 ; 抽样法 ; 整群分层抽样

covariance for cluster sampling [统计] 整群抽样协方差

one stage cluster sampling 一阶段整群抽样

stratified one-stage cluster sampling 分层单级整群抽样

Two-stage Cluster Sampling 抽样

cluster-sampling 整群抽样

post cluster sampling 事后丛聚抽样 ; 选择初始样本后的整群抽样