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图嗲 · 2018年03月04日

问一道题:NO.PZ2015120204000006 [ CFA II ]

问题如下图:

    

选项:

A.

B.

C.

解释:


请问老师:

1。这道题目中第一个表中slope的p-value是不是就等于第二个表中的Signifaicace F呀?

2。题目中三个表分别列示内容有啥区别呀,感觉一大堆,分不清是啥。。。

谢谢老师


1 个答案
已采纳答案

源_品职助教 · 2018年03月04日

这题里一个表中slope的p-value等于第二个表中的Signifaicace F的数值0,这只是一个特例。其实两者之间没有必然的联系。你要理解P值的定义,P越小越容易拒绝原假设系数等于零。这与表一种T的检验值很大所示的结论是一直的。F检验就是对方程所有系数的联合检验,它等于0就预示着整体方程无效。


这三个表格中第二个表格就是ANOVA分析表。里面的面一个字母含义都讲到过。

第一个表主要列示了方程每一个系数的情况以及是否通过了检验。

第三个表可以看做ANOVA分析表的补充说明。


不客气。





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