查询词典 stratified sample

The estimation of population mean is obtained using a cluster sampling method supplementary stratified sample.

本文就是在这一宗旨下，提出一些新的抽样方案，并在理论上证明这些方案的优越性。

The estimation of population mean is obtained using a cluster sampling method with supplementary stratified sample.

针对这一缺陷，提出了一种辅以分层抽样样本的整群抽样方案，得到了总体均值的估计量，以及这一估计量的一些良好性质。

Methods:a cluster random stratified sample of 394 medical college students were investigated with a SCL-90 questionnaire.

采取分层整群抽样的方法抽取394名医学生进行SCL-90症状自评量表的问卷调查。

Stratified cluster sampling method, to branches, grade, gender-stratified sample mean, in December 2009 granted to the Southeast University.

采用分层整群抽样的方法，以系别、年级、性别为分层指样，于2009年12月向东南大学发放。

This would be an example of a stratified sample.

这就是一个典型抽样的例子。

Methods A self-designed questionnaire survey was used to investigate a cluster stratified sample of 1010 college students.

采用分层整群抽样的方法，对广州市1010名大学生进行问卷调查。

Methods A questionnaire survey was conducted to a clustered stratified sample of1785children in Qingdao.

采取分层整群抽样的方法对青岛市1785名儿童进行问卷调查。

In chapter 4 based above two chapters, we disscuss sampling method of supplemented sample under both cluster sample and stratified sample having auxiliary information.

已有的 分层抽样和整群抽样方案都有自己的使用范围，在不适合的情况下使用效率很低。

Analytic methods based on elementary parametric and non-parametric models for one sample; two sample, stratified sample, and simple

主要目标是由已知的样本资料经由正确有效的分析来推测母体所具有的特性；另外则是适当地设计样本取得的程序及取样的范围，以便使所观察样本显现的特性能真实反映母体的现象，进而能以简洁的分析，作有效的推论。

Nalytic methods based on elementary parametric and non-parametric models for one sample; two sample, stratified sample, and simple regression problems

-1 B-3 2如何搜集有价值的资料？如何组织、解释所搜集的资料？如何分析并给适当的推论？

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！