查询词典 cluster sampling

Methods Random cluster sampling method was adopted to select 6593 people of 3 villages as respondents of dermatosis epidemiological investigation.

采用随机整群抽样方法，选择3个自然村的6593人作为调查对象进行皮肤病流行病学调查。

For stratified and cluster sampling with inappreciable differences, estimate precision becomes poor.

对于分层抽样和整群抽样，当群体间的差异、群内个体间差异均不显著时，其估计精度往往都很差。

METHODS: We measured eyesight, interpupillary distance, exophthalmos and diopter of the girl students aged 18 or 19 in our school by cluster sampling.

采取整群抽样的方法，对本校18～19岁女性学生进行视力、瞳距、眼球突出度与屈光状态检查。

Methods: The study sample comprised 1 573 35～44 year old and 1 515 65～74 year old Guangdong residents recruited from urban and rural areas through multi stage cluster sampling.

通过多阶段整群抽样方法从城市和农村抽取35～44 岁组1 573 人和65～74 岁组1 515 人为样本，用结构式问卷由经培训的问卷人员进行面对面问卷调查。

METHODS: By cluster sampling, 214 cadets from a military academy were investigated with Modified Big Five Personality Scale and selfdesigned decisionmaking scale. The cadets were randomly divided into 2 groups. After noneffective questionnaires were eliminated, the first group (n=110) were in a positive framing and the second group (n=104) in a negative framing. A chisquare test was used to analyze the results of program chosen and t test was used to determine the relationship between personality dimension and risky choice.

采用自编决策问题问卷和大五人格量表中国修订版，以整群抽样的方法，抽取某军校大学生220人为研究对象，随机分为两组，剔除无效问卷后，正面框架组(n=110)，负面框架组(n=104)，对两组间被试的方案选择进行χ2检验，方案选择与人格特征的关系进行t检验。

And use the award-winning teachers of teaching excellence awards between 2003 and 2007 held by Ministry of Education as parent population, and were implemented by 2-stage strata and cluster sampling survey with a total of 580 questionnaires distributed, and 353 valid questionnaires with a rate of return of 60.8%.

并以92至96学年度教育部所举办之教学卓越奖得奖教师为母群体，实施两阶段分层比例丛集抽样调查，共发放580份问卷，回收有效问卷共353份，有效回收率为60.8%。

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。

A total number of 2,422 people who were extracted by Stratified cluster sampling design and Probability Proportional to Size were used.

其中自北部机构有592人，中部机构有576人，南部机构有646人，东部机构有187人，总样本数共为2001人。

The purpose of this study is to investigate the relationship among Perfectionism, Self-esteem and Depressive tendency of Adolescents. Questionnaire survey were utilized as the method of this study. Subjects consisted of 686 junior high school students and 612 senior high school students in Kaohsiung City, and they were selected by stratified proportional cluster sampling.

本研究旨在了解青少年完美主义、自尊与其忧郁倾向之相关研究，采问卷调查法，使用分层比例丛集取样的方式，以高雄市国中生686人和高中生612人为样本进行调查。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。