查询词典 stratified sampling

In this study, stratified sampling is in Shandong Province and Ningxia Hui Municipality.

本研究在宁夏回族自治区的3个县和山东省的3个县进行调查和分析。

Nine thousand two hundred and seven subjects were selected by stratified sampling.

本研究的调查问卷经专家学者拟订，共有十二道题目。

By using stratified sampling method, a retrospective analysis was performed according to 1 146 cases.

采用分层抽样的方法，回顾性地分析1 146例患儿首选及联合使用抗生素情况。

Methods: Stratified sampling survey among the youth in government organizations.

研究方法：采用分层抽样方法对机关青年的工作满意度和价值观进行问卷调查。

This text proceed from this promptly, discuss Stratified Sampling application and sample assessment of result of method mainly, Pass to some profit and tax amount sample investigation design of method, enterprise of shopping center, Probe into and divide layer sample actual application of technology further.

本文即从这一点出发，主要讨论分层抽样的基本方法以及抽样效果的评估，并通过对某商业区企业利税额抽样调查方法的设计，进一步探讨分层抽样技术的实际运用。

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。

Finally to Stratified Sampling improvement of technology put forward some views.

最后对分层抽样技术的改进提出了一些看法。

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

分层随机抽取我国12个省市7 282名2～5岁儿童作为研究对象。

By the introduction of the theory of sampling constant presented by Ingamells and Switzer, the stratified sampling for segregated bulk materials were studied.

将Ingamells-Switzer取样常数理论引入分层性固体物质的取样研究，提出了分层取样的最优化设计方案，推导出了各层取样量及分层取样方差极小值计算公式。

We made use of the methods of stratified sampling and random sampling to investigate 269 882 broth prescriptions of Medical Department of TCM in 21 various hospitals, 18 provinces, and constructed the database, then applied Weka KDD software to analyze.

在全国不同区域，选取18个省市的21家医院，采用分层抽样和简单随机抽样相结合的方法，收集门诊中医内科内服汤剂处方269 882张，构建中药饮片用量数据库，基于Weka数据挖掘软件进行统计分析。

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！