老师答案里的第一张图片可以小一点吗，屏幕上显示不了整张图

NO.PZ2020011101000042

问题如下：

Find Kendall’s Tau for the following data:

选项：

解释：

The first step is to rank the data:

The next step is to see which pairs are concordant, which are discordant, and which are neither.

Which leads to the pair-by-pair comparison:

For the first observation, because both the rank of X & Y are the maximum, every other observation will automatically be concordant with respect to this one. By contrast, looking at the second and third observations, the X rank increases while the Y rank decreases. Therefore, this pair is discordant.

$\widehat\tau=\frac{n_c-n_d}{n(n-1)/2}=(5-5)/10=0$

老师答案里的第一张图片可以小一点吗，屏幕上显示不了整张图

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DD仔_品职助教 · 2021年09月15日

嗨，爱思考的PZer你好：

好的呢同学~

我给后台反馈一下>.<

我截了一张小图，答案看不全的话同学请先看这张小图

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努力的时光都是限量版，加油！

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NO.PZ2020011101000042问题如下FinKenll’s Tfor the following tThe first step is to rank the ta:The next step is to see whipairs are concornt, whiare scornt, anwhiare neither.Whilea to the pair-by-pair comparison: For the first observation, because both the rank of X Y are the maximum, every other observation will automatically concornt with respeto this one. contrast, looking the seconanthirobservations, the X rank increases while the Y rank creases. Therefore, this pair is scornt.τ^=nc−n(n−1)/2=(5−5)/10=0\wihat\tau=\frac{n_c-n_{n(n-1)/2}=(5-5)/10=0τ=n(n−1)/2nc−n=(5−5)/10=0老师好，一共10对，其中5对c，5对u，那这里的n为什么不是10？而是5？

2024-05-22 15:31 1 · 回答

老师答案里的第一张图片可以小一点吗，屏幕上显示不了整张图

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