Question

If Σd² = 66 and n = 10 then find the rank correlation coefficient.

Answer 1

Since R = 1 - `[6sumd^2]/[n(n^2 - 1)]`

             =  `1 - [ 6 xx 66 ]/[ 10 xx 99 ]` 

             = `1 - 2/5`

             = `3/5`

∴ R = 0.6