If the value of n(n²-1) is six time value of ∑d² then what is the value of r??​

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1 thought on “If the value of n(n²-1) is six time value of ∑d² then what is the value of r??​<br /><br />​”

1. Given : the value of n(n²-1) is six time value of ∑d²

   To Find : the value of r

   Solution:

   rank correlation coefficient r = 1 – 6 ∑ (di)² / (n(n² – 1))

   n = numbers

   ∑ (di)² = sum of squares of the differences in ranks

   r = rank correlation coefficient

   Now its given that n(n²-1) is six time value of ∑d²

   => n(n²-1) = 6 ∑d²

   Substituting value in formula

   r = 1 – 6 ∑ (di)² / (n(n² – 1))

   => r = 1 – 6 ∑ (di)² / 6 ∑d²

   => r = 1 – 1

   => r = 0

   value of r is 0

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