Two judges at a fete placed the ten entries for best fruit cakes competition in order as follows. What’s the relationship between them?
Entry A B C D E F G H I J
Judge 1 2 9 1 3 10 4 6 8 5 7
Judge 2 6 9 2 1 8 4 3 10 7 5
1
Expert's answer
2020-12-16T19:46:50-0500
r="1-\\frac{6\\sum d^2}{n(n^2-1)}"
d -4 0 -1 2 2 0 3 -2 -2 2
d2 16 0 1 4 4 0 9 4 4 4
="1-\\frac{6*(16+0+1+...+4)}{10(100-1)}"
="1-\\frac{6*46}{10*99}"
=0.7212
there is a strong positive relationship between the two judges.
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