cluster sampling
常见例句
- DESIGN:A stratified randomised cluster-sampling investigation.
设计：分层随机整群抽样调查。 - Method: questionnaire was used to investigate 200 male out -patients in STD clinic selected with cluster-sampling method.
方法：采用随机抽样对目标人群进行问卷调查。 - Methods A survey on prevalence of FD in communities of Shijiu Neighborhood, Rizhao was conducted by using a stratified, randomized cluster-sampling method.
方法采用随机分层整群抽样方法，对日照市石臼街道常住人群进行面访式问卷调查。 返回 cluster sampling