分层样本(Stratified Sample) 步骤一：将母体中每一个体，依有特别兴趣，或是有接近性质为标准，分为若干群，称为层(stratum)。 .
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a、等距抽样(Systematic sampling) b、分层抽样(Stratified samples) c、整群抽样(Cluster samples) d、简单随机抽样(Simple random sampling) A、概率抽样(Probability samples)： 指在总体中的每...
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... stratified volcano 层状火山 stratified sample 分层取样 stratified language 成层语言,排元语言...
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non-stratified sample [统计] 非分层样本 ; 不分层样本
post stratified sample 事后分层抽样
disproportionate stratified sample 非比例的分层样本
randomly stratified sample 随机分层抽样
stratified sample with unequal probabitities 分层不等概抽样
stratified random sample 分层随机样本 ; 分层随机抽样
stratified purposive sample 分层立意样本 ; 分层蓄意样本
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N a sample that is not drawn at random from the whole population, but separately from a number of disjoint strata of the population in order to ensure a more representative sample 分层取样 [statistics] → see also frame
Methods A cluster stratified sample of 1681 students ham Jianghan University were investigated by SDS.
方法采用分层整群抽样法抽取江汉大学1681名本科学生，采用抑郁自评量表（SDS）进行测评。
Methods a questionnaire survey was conducted to a clustered stratified sample of 1 785 children in Qingdao.
方法采取分层整群抽样的方法对青岛市1 785名儿童进行问卷调查。
Methods: a cluster random stratified sample of 394 medical college students were investigated with a SCL-90 questionnaire.
方法：采取分层整群抽样的方法抽取394名医学生进行SCL - 90症状自评量表的问卷调查。
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