Question -
Answer -
We know that Mean =Sum of all observations/Number of observations
∴Mean, x̅ = ((n(n +1))2)/n
= (n + 1)/2
and also WKT Variance,
By substitute thatvalue of x̅ we get,
WKT, (a + b)(a – b) =a2 – b2
σ2 =(n2 – 1)/12
∴Mean = (n + 1)/2 andVariance = (n2 – 1)/12