Math Chapter Wise Statistics And Probability English MCQ DSSSB 23 SEP 2018 (9 AM-11 AM) Q.If X is a random variable with mean µ, then the variance of X is denoted by Var (x): AVar (X) = Σ[X-µ] BVar (X) = Σ [(X-µ)2 ] CVar (X) = Σ [X2 ] – µ DVar (X) = Σ [X] – µ2 Show answer Correct answer: Var (X) = Σ [(X-µ)2 ]