1) three-stage clustered randomized sampling
三阶段随机抽样
2) Stratified three-stage PPS random sampling
分层三阶段PPS随机抽样
3) two-stage clustered randomized sampling
二阶段随机抽样
4) multi-stage random sampling
多阶段随机抽样
1.
Methods A total of 7482 residents aged 15-69 selected in representative 30 counties through multi-stage random sampling from Zhejiang Province were surveyed by using questionnaire.
方法采用多阶段随机抽样的方法,在浙江省有代表性的30个县区,对7482名年龄在15～69岁的居民进行面对面问卷调查。
5) multi-stage cluster random sampling
多阶段整群随机抽样
1.
It was a descriptive epidemiologic study,using multi-stage cluster random sampling.
研究采用描述性流行病学的方法,通过多阶段整群随机抽样,从拱墅区中先抽取康桥镇作为一级抽样单元,再从康桥镇中抽取西杨村和吴家墩村作为二级抽样单元,然后在西杨村和吴家墩村中对外来流动人口进行问卷调查。
6) three-stage sampling
三阶段抽样
1.
A balanced three-layer sample rotation pattern is presented in this paper to solve the problem of rotation for the quarterly surveys with three-stage sampling designs.
本文构造了一种平衡的三层次样本轮换模式,解决了三阶段抽样季度调查的三层次样本轮换问题。
2.
Another balanced three-layer sample rotation pattern based on the former one given by the author is presented to solve the problem of rotation for quarterly surveys with three-stage sampling designs;and the new one has the same characteristics of keeping the sample match rates constant when any rotation is conducted as the former one.
针对采用三阶段抽样设计的季度调查,在此之前构造的一种平衡三层次样本轮换模式的基础上,构造了另外一种平衡的三层次样本轮换模式。
补充资料：纯随机抽样
纯随机抽样
【纯随机抽样】亦称“简单随机抽样”。按随机的原则直接从总体N个单位中抽取n个单位作为样本，保证总体中每个单位在抽选时都有相等的被抽中机会的抽样方法。它是抽样中最基本、最单纯的方式，适用于均匀总体。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条