三个样本率分别为82.9%，84.0%，53.9%，评价其高低的方法是（） -题库考试答案搜索网

三个样本率分别为82.9%，84.0%，53.9%，评价其高低的方法是（）

单选题

2022-04-26 21:06

A、直接比较三个样本率
B、用标准化率的大小评价
C、进行率的标准化处理
D、对三个率作X<sup>2</sup>检验
E、对三个率作相关分析

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正确答案

D

试题解析

三个样本率直接比较，忽略了抽样误差的影响；用标准化方法计算标准化率是针对总体率进行的比较，不能用于样本率比较；相关分析不作率间的比较；所以对三个样本率要作行×列的X²检验。

标签：公卫正副高营养与食品卫生(医学高级) 健康教育主治医师健康教育基础知识

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