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blade8932 · 2022年09月24日

请老师解释下C选项本身表述的意思，和错在哪里，谢谢！

  1. CFA I
  2. Quantitative

NO.PZ2018062016000144

问题如下：

Which of the following statements on chi-square test is most appropriate?

选项：

A.

It's used in tests concerning the variance of single normally distributed population.

B.

It's not sensitive to violations of its assumptions.

C.

It can use in the condition of the sample which is less random.

解释：

A is correct. The chi-squared test is used in tests concerning the variance of a single normally distributed population. It's sensitive to violations of its assumptions. If the sample is not actually random, the chi-square test are likely to be faulty.

RT

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星星_品职助教 · 2022年09月24日

同学你好，

卡方分布针对的是随机变量。C选项描述相当于说此时不是随机变量，所以不能使用卡方分布。

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