首页/ 题库 / [单选题]为了估计全国高中学生的平均身高,从 20的答案

为了估计全国高中学生的平均身高,从 20 个城市选取了 100所中学进行调查。在该项研 究中,研究者最感兴趣的变量是()。

单选题
2021-09-02 16:38
A、100 所中学的学生数
B、20 个城市的中学数
C、全国高中学生的身高
D、全国的高中学生数
查看答案

正确答案
C

试题解析

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为了估计全国高中学生的平均身高,从 20 个城市选取了 100所中学进行调查。在该项研 究中,研究者最感兴趣的变量是()。
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