• The application of sample survey method in history research is analyzed.

    方法:对项目点北碚区进行抽样调查

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  • By using the method of sample survey, this paper investigated the edit situation of popup news in the three main instant messengers QQ, POPO and UC, in order to find out their character.

    本文通过抽样调查方法,对当前国内大网络即时通讯工具(腾讯QQ、网易POPO、新浪uc)弹出式新闻编辑状况进行比较分析揭示其各自特色

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  • We used the method of investigating the sample and the general survey to investigate and study the plant resources in area of six counties and two districts under Shangqiu's jurisdiction.

    采取调查结合普查方法商丘市辖区内两区、一市的植物资源进行了调查。

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  • The generation and damage regulation of red turpentine beetle (Dendroctonus valens) are studied with the method of sample plot and tree-by-tree survey.

    采用标准地调查单株调查方法研究了脂大小蠹发生和危害规律

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  • Methods: Stratified random cluster sampling method was used to determine the survey sample.

    方法以分层随机整群抽样方法确定调查样本

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  • Methods With the method of questionnaire survey, a cluster sample of 3 012 students (aged 15-19) were investigated. They were chosen from Qinghai Province, Shanxi Province and Zhejiang Province.

    方法选择青海省山西省、浙江省各1个县,采用整群抽样方法,共选取3 012名15 ~19在校中学生进行问卷调查。

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  • The variance estimation is very important part in sample survey, and replicated sample method is a common method.

    方差估计抽样调查重要组成部分抽样方法是常用的方差估计方法。

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  • Method Self-designed questionnaire survey was conducted among 95 chief nurses of cluster convenience sample.

    方法采用整方便样本,运用自设问卷对95名三甲医院主管护师进行调查。

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  • The subject choice, randomized method, blind method, intra-group comparison, sample, compliance, statistical method, therapeutic effect assessment index, survey and side effects were observed.

    调查内容包括研究对象选择随机化方法、组间可比性样本大小、依从性统计学处理、疗效评价指标、随访不良事件观察等。

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  • Based on the theory and method introduced before, this paper applied the rotation models to compute the sample rotation rate of sampling survey on vacancy rate of households in Shanghai.

    包括分层抽样样本轮换估计量公式最优样本轮换的确定方法。再接着利用前面介绍理论知识,结合上海市城镇住房空置率抽样调查数据进行实证分析。

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  • Methods By using the cluster sampling method, a sample of 518 students drawn from 4 high schools in Chuzhou, then a questionnaire survey was conducted among them.

    方法采取抽样方法滁州市4所高中年级毕业班学生518名进行问卷调查。结果81。5%的学生使用过互联网。

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  • Methods By using the cluster sampling method, a sample of 518 students drawn from 4 high schools in Chuzhou, then a questionnaire survey was conducted among them.

    方法采取抽样方法滁州市4所高中年级毕业班学生518名进行问卷调查。结果81。5%的学生使用过互联网。

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