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.
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