stratified randomized sampling
... multistage stratified random sampling 多级分层随机抽样 stratified randomized sampling 随机分层抽样 stratified random sampling surveys 分层随机抽样调查 ...
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stratified randomized sampling
分层随机抽样
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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。
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