1) Cluster sampling
整群抽样
1.
Methods Cluster sampling method was used and the results were analyzed for cultivable bacteria in several representative hospitals of Chengde city from May 1998 to May 2000.
方法采取整群抽样方法,对承德市几家有代表性医院从1998年5月至2002年5月的临床细菌培养结果进行统计分析。
2.
Methods 3299 students in Tongcheng middle and elementary schools were sampled by cluster sampling and some common diseases were investigated.
方法 通过整群抽样对桐城市 32 99名中小学生进行健康检查和常见病的监测。
3.
For stratified and cluster sampling with inappreciable differences, estimate precision becomes poor.
对于分层抽样和整群抽样，当群体间的差异、群内个体间差异均不显著时，其估计精度往往都很差。
2) multiple-stage cluster sampling
多阶段整群抽样
3) adaptive cluster sampling
适应性整群抽样
1.
On two stage adaptive cluster sampling to assess pest density;
应用二阶适应性整群抽样估计害虫密度
4) stratified cluster sampling
分层整群抽样
1.
Estimation of parameters in stratified cluster sampling on randomized response technique for sensitive question survey
敏感问题随机应答技术模型分层整群抽样下参数的估计
2.
This paper discusses cluster sampling and stratified cluster sampling in continuous surveys with censuses.
本文讨论了连续调查中应用普查方法时的整群抽样和分层整群抽样。
3.
Results Formulas for the estimation of the population proportion and its variance on the improved RRT model in cluster sampling and stratified cluster sampling were deduced.
结果推导出二分类敏感问题改进的随机应答技术在整群抽样、分层整群抽样下总体比例的估计量及其估计方差的计算公式,并在苏州大学学生婚前性行为的调查中取得了成功的应用效果。
5) two-stage cluster sampling
二阶段整群抽样
1.
Firstly, we give an effective sampling design: a simple random case sample with replacement is drawn out of all cases; the control sample is drawn out of all controls with two-stage cluster sampling.
首先，我们设计了一个有效的抽样方案：采取简单随机抽样从病例组抽取样本；采取二阶段整群抽样从对照组抽取样本。
补充资料：整群抽样
分子式：
CAS号：
性质：将总体中各单位划分为若干群，从各群中随机抽取整群样品，例如，调查中学生患近视眼的情况，抽某一个班做统计；进行产品检验；每隔8h抽1h生产的全部产品进行检验等。整群抽样的优点是抽样方法简便，缺点是抽取的样本在总体中分布不均匀，代表性差。
CAS号：
性质：将总体中各单位划分为若干群，从各群中随机抽取整群样品，例如，调查中学生患近视眼的情况，抽某一个班做统计；进行产品检验；每隔8h抽1h生产的全部产品进行检验等。整群抽样的优点是抽样方法简便，缺点是抽取的样本在总体中分布不均匀，代表性差。
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