分层抽样
- 与 分层抽样 相关的网络例句 [注：此内容来源于网络，仅供参考]
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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。
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EMBU and the self-ordained family environment questionnaire were used. 420 students were tested and inquired.
运用父母养育方式问卷及自编家庭状况问卷，分层整群抽样，对420名大学生进行调查。
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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。
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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。
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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。
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Methods Stratified Cluster Sample was used in survey on middle-school students in Mengcheng County.
方法采用分层整群抽样方法对蒙城县中学生进行基线和干预后艾滋病相关问题的问卷调查。
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Methods With a questionnaire, a stratified cluster sample of 7 527 students were investigated. Multivariate logistic regression analysis was performed to assess factors for suicidal ideation.
方法采用统一调查表，应用分层整群抽样的方法调查广州市8所中学和8所小学学生7 527名，通过多因素Logistic回归模型筛选自杀意念的危险因素。
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Methods A questionnaire survey on QOL was conducted to a clustered stratified sample of 2036 students of rural or urban to Hubei.
采用分层整群抽样方法，对湖北省城乡中小学生2036名利用《儿童少年生活质量量表》进行生活质量测查。
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Methods By using health related behaviors questionnaire for Chinese youths, a stratified sample of 5158 students from 12 junior middle schools in 4 cities in Henan Province were surveyed. The influencing factors were analyzed.
采用分层整群抽样方法，抽取河南省4个省辖市12所初中的5158名学生，应用中国疾病预防控制中心制定的"中国青少年健康相关行为调查问卷"进行调查，并对影响因素进行分析。
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Methods A cluster stratified sample of315undergraduates were investigated with a closed questionnaire,and301questionnaires were available.
采用分层整群抽样法，抽取贵州省在校大学生315名进行无记名封闭式问卷调查，获得有效问卷301份。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。