• Methods: Adopting the methods of whole group sampling at random, study on 306 children aged 4-6 of 14 kindergartens in Jing an District of Shanghai.

    方法采用随机抽样方法,在上海市静安区抽取14所幼儿园306名4 ~ 6儿童进行研究

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  • The colognes and perfumes tested were a random sampling of products the average consumer might find at a department or drugstore.

    古龙水香水检测是在任意顾客产品或者一个企业或者一个化妆品店随机进行的化学测试。

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  • The program consists of a statistical random sampling designed to detect a 1% incidence of violations at a confidence level of 95%.

    计划包括一个统计学上随机采样目的95%置信程度上查出1%的违规几率

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  • Methods By random sampling method, 9 refectories and 366 students usually having their lunch at schools were drawn from Fangshan District, an anonymous questionnaire survey was conducted among them.

    方法采用随机抽样方法,对房山区9所中小学校食堂366名在校就餐的学生进行膳食及营养教育相关情况的问卷调查

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  • Methods an investigation was made 1 000 old people aged 60 and upwards by random sampling and calling at the house.

    方法采用整群随机抽样并进行入户调查的方法,对1 000名60以上老年人进行了调查。

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  • At the same time, 49 Yangtse River Delta White Goats were sampled as contrast population from the suburb of Yangzhou city Jiangsu province by the simple random sampling method.

    同时,在江苏省扬州市郊区简单随机抽样49只长江三角洲山羊作为对照群体。结果表明。

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  • METHODS: A total of 478 children at age of 9-12 years from Tulufan City and Buerjin County of Xinjiang Province were enrolled by random cluster sampling.

    方法:分别新疆吐鲁番市区布尔津县两地采用随机抽样方法,抽取9~12儿童478名。

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  • In this paper, the author arrives at the method keying to random sampling sum distribution in normal statistics structure.

    给出常见统计结构随机样本分布求解方法

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  • Methods: Cluster random sampling was used for door-to-door questionnaire survey. Using self-made questionnaire drew 386 elderly at random from 12 communities of Wenzhou City.

    方法采用整群随机抽样入户调查的方法,自制问卷温州市城区12个社区386名老年人进行调查。

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  • Methods: Cluster random sampling was used for door-to-door questionnaire survey. Using self-made questionnaire drew 386 elderly at random from 12 communities of Wenzhou City.

    方法采用整群随机抽样入户调查的方法,自制问卷温州市城区12个社区386名老年人进行调查。

    youdao

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