抽样

Investigates the survey manner,sampling method and calculation of sample size.

就调查方式、抽样方法和样本容量的计算进行了探讨。

To improve the efficiency of sampling survey, the auxiliary information allways is used.

第一章为以后做准备，简单回顾了一些基本的抽样方法以及后面用到的一些概念。

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。

By the research of sampling survey and radio propagation, a novel method on sampling and analysis of field test data is introduced.

通过对抽样调查理论和无线传播特点的研究，提出了一种移动通信网络路测数据的抽样与分析方法。

Methods According to the national guidelines, clustered random sampling was made for the survey.

方法按照全国统一制定的调查方案，按病种以分层整群随机抽样的方法确定调查点。

Through systemic survey sampling, 312 persons with an average age of 56.3 were participated in this study.

本研究是依系统抽样方式，共抽得有效样本 312 人，平均年龄 56.3 岁。

A sampling unit may be a unit of money, a unit of physical object or any other unit.

抽样单位可以是金额单位，也可以是实物单位或其他单位。

A stratified random sampling method, cluster-sampling unit, was adopted to select the required student samples which included 421 students from 14 primary schools, 462 students from 15 junior-high schools, and 623 students from 16 high schools in Kaohsiung, Taiwan.

本研究以分层随机抽样方式选取高雄地区45所学校共1516名学生，包含14所国小共421人、15所国中462A、16所高中623人。

Pool and unit of sampling

总体及抽样单位

Yes, but we still need to do sampling test of the materials.

有，但我们还是要做原料的抽样检测。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。