查询词典 stratified sample

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。

The survey conducted in Taiwan was designed using a multiple-stage sampling method that utilized the principles of probabilities proportional to size, stratified sampling, and systematic sampling to strengthen the sample's effective representation.

为符合研究的需要，本次研究的抽样方法采取较复杂的多阶段抽样法，主要应用「抽取率与单位大小成比例」原则，结合分层抽样、等距抽样等抽样方法的优点，以求提高样本代表性。

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 random sampling and simple random sampling methods were used to select sample from 14 counties.

通过分层抽样和单纯随机抽样相结合的方法，抽取昆明市14个县的部分参合农民进行问卷调查。

The simple random sampling plan and stratified random sampling plan has been introduced and the application means and effects of which also has been presented,it has some characteristics such as material precision and obvious reduce of sample size,and rational advice has been presented.

介绍了简单随机抽样和分层随机抽样方法及其在检测中的应用方法和效果。

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:Stratified multiple phases sample method was adopted, 240 female doctors were assessed.

采用多阶段分层抽样方法对240名三级甲等综合医院的女性医生进行调查。

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。

Methods A cluster stratified sample of 1 681 students from Jianghan University were investigated by SDS.

采用分层整群抽样法抽取江汉大学1 681名本科学生，采用抑郁自评量表进行测评。

This is the inheritance of the tribe of the children of Issachar according to their families, the cities and their villages.

19：23 这些城并属城的村庄就是以萨迦支派按着宗族所得的地业。

I've have enough of your garbage.

我听了你的废话。