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八月必过 · 2021年09月15日

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.

τ^=ncndn(n1)/2=(55)/10=0\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

1 个答案

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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