“stratified random sampling”的概念、定义、翻译、参考文献-科学参考

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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