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The rank of 8 same students in tests in ...

The rank of 8 same students in tests in Mathematics and Statistics were as follows :

Calculate the coefficient of rank correlation.

Text Solution

Verified by Experts


`r_(k)=1-(6sumD^(2))/(N^(3)-N)`
Here , `N=8,sumD^(2)=40`
Substituting the values, we get
`r_(k)=1-(6xx40)/((8)^(3)-8)=1-(240)/(512-8)=1-(240)/(504)=1-0.48=0.52`
Coefficient of Rank Correlation `(r_(k))=0.52`
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