stratified sampling
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
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。
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。
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。
|