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。
Method Using stratified random sampling method.
方法采用分层随机抽样方法。
Methods: Totally 1000 nurses were investigated with a self designed questionnaire using stratified random sampling.
方法：采用分层随机抽样的方法，自行设计问卷，对1000名临床护理人员进行调查。
Method Some food processing employees were selected according to stratified random sampling method, and filled in a unified questionnaire anonymously.
方法按照分层随机抽样原则随机抽取部分食品从业人员，匿名独自填写统一的调查问卷。
The paper proposes new separate ratio estimators for population mean using known skewness coefficient of auxiliary variable in stratified random sampling.
本文在分层随机抽样下通过使用辅助变量的偏斜系数提出了几个总体均值的估计。
Methods By using stratified random sampling method 524 college students were selected and surveyed with scales about sense of alienation and subjective well-being.
方法分层随机抽取某高校524名大学生，采用疏离感和主观幸福感量表进行施测。
The 460 subjects are selected from different grades and gender of four dalian universities by stratified random sampling, and screen out 406 effective questionnaires.
采取分层随机取样方式选取大连4所大学在校生作为研讨对象，抽取不同年级、性别的在校生共460名，最后筛选出有效问卷共406份。
Methods General investigation was adopted to understand the water supply situation in rural areas and stratified random sampling was used to monitor the water quality.
方法按照相关调查表要求，对农村供水情况进行普查，供水水质采用分层随机抽样的方法进行监测。
Methods A total of 310 teachers from 4 middle schools in Huaibei City were selected with stratified random sampling to undergo a survey with teacher job burnout questionnaire(MBI-ES).
方法采用分层随机抽样方法，抽取安徽省淮北市4所中学的310名教师，采用教师职业倦怠量表（MBI-ES）进行调查。
The paper introduces multiple imputation (mi) for missing data in stratified random sampling, and discusses the ordinary method of mi with ignorable nonresponse, and illustrates the essential steps.
介绍分层随机抽样条件下多重插补法处理缺失数据的基本思想，分析可忽略无回答的分层随机抽样建立多重插补的常用方法，并通过实例加以说明。
Methods Stratified random sampling was adopted to investigate 2588 doctors and nurses in August, 2008.
方法2008年8月采用分层随机抽样方法，对2 588名医护人员进行调查。
Methods Stratified random sampling was adopted to investigate 2588 doctors and nurses in August, 2008.
方法2008年8月采用分层随机抽样方法，对2 588名医护人员进行调查。
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