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单词
stratified random sampling
释义
stratified random sampling
Encyclopedia
教育学
抽样
释
stratified random sampling
分层随机抽样
按照总体已有的某些特征，将总体分为几个不同的部分（每一部分称一个层），再分别在每一部分中随机抽样的方法。
农学
抽样调查
释
stratified random sampling
分层随机抽样
将总体按一定的原则分成若干个子总体，每个子总体称为层，在每个层内进行抽样，不同层的抽样相互独立且每层的抽样都是简单随机抽样的方法。
Mathematics
＞数理统计＞抽样与统计过程控制＞释义
stratified random sampling
分层随机抽样
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