If the sum of the square of rank differences in the marks of 10 students in two students is 44 then the coefficient of rank correlation is ______

If the sum of the square of rank differences in the marks of 10 studen

1.	If the sum of the square of rank differences in the marks of 10 students in two students is 44 then the coefficient of rank correlation is ______
A.	0.78
B.	0.73
C.	0.87
D.	None
Answer» C. 0.87

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If the sum of the square of rank differences in the marks of 10 students in two students is 44 then the coefficient of rank correlation is ______

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