stratified random sampling method [统计] 分层随机抽样法
proportionate stratified random sampling 定比分层抽样法
disproportionate stratified random sampling 异比分层随机抽样
multistage stratified random sampling [统计] 多级分层随机抽样
proportional stratified random sampling 分层随机抽样
stratified random sampling surveys 分层随机抽样调查
Stratified random sampling 分层随机抽样 ; 分层抽样
Using Stratified Random Sampling 采用分层随机抽样
stratified random sampling model 分层随机抽样
stratified random sampling pattern 分层随机抽样格式
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 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。
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。
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