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爱上C的笑119 · 2018年11月21日

问一道题:NO.PZ2015120204000016

问题如下图:

    

选项:

A.

B.

C.

解释:


在课程中不是说multiple R已经是R square开根号以后的吗,解释中为什么还要再一次将Multi'ple R进行开根号表示correlation?,该知识点在基础班哪里呀?

1 个答案

菲菲_品职助教 · 2018年11月22日

同学你好,这边是multiple R-squared,不是multiple R哦。其实这个multiple R-squared就是我们平常所说的R²,这个multiple只是代表在多元回归下的,跟我们之后说的multiple R还是要区分开。

粉红豹 · 2018年12月13日

 multiple R-squared 就是R square 吗? 最后一句:“这个multiple只是代表在多元回归下的,跟我们之后说的multiple R还是要区分开”,没太懂。。。老师求解释。。。

菲菲_品职助教 · 2018年12月13日

对是的,这两者是一样的。就是说 multiple R-squared ≠ multiple R的意思。

他三哥 · 2020年02月18日

我的天,所以世界上不光是存在R方,还存在Multiple R方,还存在Multiple R,而前两者,是一个东西。

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