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分层抽样
1、multistage sampling───多级采样; 多级抽样; 多级抽样法; 多级取样;[统计]多级抽样
2、convenience sampling───便利抽样;方便抽样;任意抽样;方便抽样,任意抽样
3、sampling distribution───采样分布;[数]抽样分布;取样分布
4、stratification───n.层理;成层
5、cluster sampling───分群[组]抽象法;分组取样;类集抽样;巢式抽样法
6、sampling error───[数]抽样误差;取样误差,抽样误差,采样误差
7、impertinence sampling───不恰当抽样
8、quota sampling───配额取样;[经]定额抽样;定额抽样(法)
9、unstratified sampling───非分层取样
1、Methods the sampled students, which were taken out from the all middle schools in Sanming city by means of randomized stratification cluster sampling, were investigated with AAT (adaptability test).───方法按整群、分层、随机的原则,采用学习适应性测验(中学生版)对全市中学进行抽样调查。
2、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。
3、Hygiene investigation was carried out in 156 classrooms of 36 schools with stratification sampling.───采用分层抽样方法,对36所学校、156间教室进行卫生学调查。