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木水日 · 2019年04月16日

问一道题:NO.PZ2017092702000113 [ CFA I ]

问题如下图:

选项:

A.

B.

C.

解释:

我百度了一个表查出来 双尾 自由度16 t0.05怎么是2.12啊?单尾的 t0.05才是1.746

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已采纳答案

菲菲_品职助教 · 2019年04月17日

同学你好,你查错列了,双尾是要查0.1那一列的,因为这边是90%。

木水日 · 2019年04月22日

答案里写的不是t0.05么

菲菲_品职助教 · 2019年04月24日

不是说写t0.05就是查0.05。查表有查表的方法。这个t0.05代表着一个尾巴。而表上的双尾是一个整体。

木水日 · 2019年05月04日

那这种情况怎么区分,还是说有哪节课讲了的?可以详细说一下么,不然我下次遇见还是不知道该查哪个啊。。

菲菲_品职助教 · 2019年05月04日

其实不用想的这么复杂,也不用太关注公式里的下标这种,只要记住,双尾10%就查双尾10%,单尾10%就查单尾10%,就这么简单啦。

木水日 · 2019年05月05日

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