... finely stratified 薄层理的; 薄层状的 sampling stratified 分层抽样 stratified alluvium 层状冲积层; 成层冲积层 ...
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stratified sampling method [统计] 分层抽样法
stratified random sampling method [统计] 分层随机抽样法
stratified proportion sampling 分层比例抽样
stratified purposive sampling 分层有意抽样 ; 分层目的抽样
area stratified sampling 区域分层抽样
method of stratified sampling [矿业] 分层取样法 ; 分层抽样法
stratified simple random sampling 分层简单随机抽样 ; 简单随机抽样
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
disproportionate stratified sampling [统计] 不等比例分层抽样 ; 非比率分层抽样法
We randomly selected 806 children under 6 years of age from 45 primary anganwadi (childcare) centres in Chandigarh, Punjab, India, that were chosen through multistage stratified random sampling.
在印度旁遮普省昌迪加尔的45所托儿所(anganwadi)中心采用多级分层随机取样法选择了806名6岁以下儿童。
DESIGN: Cluster sampling and stratified analysis.
设计：整群抽样，分层分析。
Methods: The stratified sampling and cluster random sampling methods are used in this survey.
方法：本研究采用分层随机抽样方法和整群随机抽样方法。
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