stratified sampling

Mental health levels in university students : stratified sampling study

普通高校大学生的心理健康水平：分层抽样调查

Throughput measurement technique for high-speed network based on stratified sampling

基于分层抽样的高速网络吞吐率测量

This study uses methods of stratified sampling and content analysis .

论文主要采用了分层、分类的研究方法以及内容分析法。

Stratified Sampling Design Applied in the Individual & Private Business of Yunnan Province

云南省个体、私营企业多层次抽样调查方案设计

Statistical error can be achieved by stratified sampling method .

统计误差可以通过分层抽样的方法达到。

Stratified sampling method for assessment of ambient air quality

环境空气质量评定用分层取样法

Improved stratified sampling technique and performance research

改进型分层抽样技术及性能研究

Paddy rice area estimation using a stratified sampling method with remote sensing in China

基于分层抽样的中国水稻种植面积遥感调查方法研究

The Optimum Design for Stratified Sampling of Solid Materials

固体分层取样方案的最优化设计

An improved stratified sampling Monte-Carlo method to analyze the reliability of structural systems

解结构可靠性问题的改进分层抽样法

The principle of stratified sampling for evaluation on the multiple integrals

重积分计算的分层抽样原理

Stratified sampling can reduce the sampling error associated with simple random samples .

分层抽样可以减少由简单随机抽样造成的抽样误差。

Model of the Goal Programming by Stratified Sampling

抽样调查的目标规划模型

In this study , stratified sampling is used to select samples in Gansu Province .

本研究采用分层抽样的方法，在甘肃省四个县进行调查和分析。

Methods : The stratified sampling and cluster random sampling methods are used in this survey .

方法：本研究采用分层随机抽样方法和整群随机抽样方法。

Stratified sampling technology-based modal parameter identification from short data sequence is discussed .

提出基于分层抽样的短样本模态参数识别方法。

Stratified Sampling in Fracture Probability Analysis of Spherical Tanks

分层取样法在计算球罐断裂失效概率中的应用

Stratified Sampling Method Applied to the Mean-Square Value Control of white Steam Filature

分层法在白厂丝均方差管理中的应用

[ Method ] Cluster and stratified sampling survey was adopted from 310 students in medicine college .

[方法]选择医学院大专的学生，采用整群抽样和分层抽样方法，抽取一年级4个班和二年级4个班学生310人进行问卷调查。

Methods Middle School students in Jiangsu Rural Areas were investigated with SCL-90 by stratified sampling .

方法随机分层整群抽样的方法，应用症状自评量表（SCL-90）对江苏省农村中学进行调查测评。

The allocation of sample size of multivariate stratified sampling

多元分层抽样样本量的分配

Compare and Analyse Between Systematic Sampling and Stratified Sampling

系统抽样与分层抽样的比较分析

Random Weighting Approximation of the Means in Stratified Sampling

分层抽样中均值估计误差分布的随机加权逼近

Face to face interview was carried out during the optimum allocation random stratified sampling survey process .

最优分配随机分层抽样方法则采用访谈，获得数据。

This theory was verified by the experiment of stratified sampling for chemical analysis of silicon carbide material .

应用碳化硅物料的分层取样实验对该理论进行了验证，提出了最佳取样方案。

Modal parameters identification for short data sequences based on stratified sampling and optimism complex Morlet wavelet

用分层抽样和复Morlet小波识别短样本模态参数

Sample papers on data flow , including density-based sampling , stratified sampling and other dynamic .

关于数据流抽样的论文，包括基于密度的抽样，动态分层抽样等。

The New Approach to the Survey Methods of Sensitive Questions A STUDY ON STRATIFIED SAMPLING FOR SURVEYING SENSITIVE QUESTIONS

敏感问题调查技术新探分层抽样下敏感问题研究

Methods 7 282 children aged 2 to 5 years were selected by stratified sampling from twelve software .

方法分层随机抽取我国12个省市7282名2~5岁儿童作为研究对象。

An Inquiry into Annual Updating of NFI Data under Stratified Sampling

分层抽样下的森林资源清查数据年度更新探讨