stratified sampling
分层抽样：将一个大群体按照年龄、性别、社会阶层等因素分成若干层
常用释义
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基本释义
- 分层抽样：将一个大群体按照年龄、性别、社会阶层等因素分成若干层，然后从每一层中随机抽取一定数量的样本，以便更好地了解整个群体的意见。
例句
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1·METHODS an investigation was made by cluster and stratified sampling method.方法采用多阶段分层整群抽样方法入户调查。
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2·Stratified sampling can reduce the sampling error associated with simple random samples.分层抽样可以减少由简单随机抽样造成的抽样误差。
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3·Methods: The stratified sampling and cluster random sampling methods are used in this survey.方法：本研究采用分层随机抽样方法和整群随机抽样方法。
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4·Methods With stratified sampling and cluster sampling, we investigate 487 families in poverty.方法采用分层整群抽样方法调查487户贫困家庭。
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5·Methods A large-scale survey was conducted at 250 medical health units based on stratified sampling.方法使用分层抽样的方法在全国范围内抽取250家医疗机构开展大规模调查。
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6·Sample papers on data flow, including density-based sampling, stratified sampling and other dynamic.关于数据流抽样的论文， 包括基于密度的抽样，动态分层抽样等。
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7·Methods Middle School students in Jiangsu Rural Areas were investigated with SCL-90 by stratified sampling.方法随机分层整群抽样的方法，应用症状自评量表（SCL-90）对江苏省农村中学进行调查测评。
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8·This theory was verified by the experiment of stratified sampling for chemical analysis of silicon carbide material.应用碳化硅物料的分层取样实验对该理论进行了验证，提出了最佳取样方案。
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9·As the sampling survey is stratified sampling, so the research of the sample rotation is under the stratified sampling.由于该抽样调查采取的是分层抽样，因此相应地用分层抽样下的样本轮换研究。
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10·Stratification is one of the key techniques in stratified sampling investigation and monitoring using remotely sensed data.分层技术是遥感分层抽样调查与监测方法中的关键技术之一。