Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Geography

\(\rm \sqrt{\frac{\displaystyle \sum_{i=j}^n\left(X_i-\overline{X}\right)^2}{N}}\) is used to calculate _______. 

1
Mean Deviation
2
Coefficient of variation
3
Standard Deviation
4
Skewness
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