defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Statistics Correlation and Regression
In Spearman rank correlation coefficient rs = 1 - \(\dfrac{6∑ d^2}{n(n^2-1)}\), the maximum value of ∑d2 in case of untied rank is:
1
\(\dfrac{1}{2}(n^2 - 1)\)
2
\(\dfrac{1}{4}n(n^2 - 1)\)
3
n
4
\(\dfrac{1}{3}n(n^2 - 1)\)