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Yytfish · 2021年04月04日

请解释选项C和D意思,QQplot到底是用假设检验历史,还是历史检验假设啊。

NO.PZ2020033001000005

问题如下:

Which of the following purposes is the QQ (quantile-quantile) plot best used to achieve?

选项:

A.

Test whether the empirical distribution satisfies the normal distribution.

B.

Test whether the empirical distribution satisfies the lognormal distribution

C.

Identifying an empirical distribution from a theoretical distribution.

D.

Identifying a theoretical distribution from an empirical distribution

解释:

C is correct.

考点:Quantile-Quantile Plots

解析:QQ图的作用,如果是线性的,the specified distribution fits the data

请解释选项C和D意思,QQplot到底是用假设检验历史,还是历史检验假设啊。

1 个答案

品职答疑小助手雍 · 2021年04月05日

嗨,从没放弃的小努力你好:


都不是,没有历史只有实际,是检验一个实际的分布是不是和一个猜想的理论分布一致。

相当于是identify(辨认)一个实际的分布(empirical)是否和theoretical分布一致。

----------------------------------------------
虽然现在很辛苦,但努力过的感觉真的很好,加油!

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