1 Answer
Solution :-
We know that Mean =
\( \dfrac{Sum\; of\; all \;observations}{Number\; of \;observations}\)
Mean, x̅ = \( \dfrac{ ((n(n + 1))2)}{n}\)
= \( \dfrac{ (n + 1)}{2}\)
and also Variance,
By substitute that value of x̅ we get,
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We know that,
\( (a-b)^2=a^2-2ab+b^2\)
_1638882915.png)
(a + b)(a – b) = a2 – b2
σ2 = \( \dfrac{(n^2 – 1)}{12}\)
Mean = \( \dfrac{ (n + 1)}{2}\) and Variance
\( \dfrac{(n^2 – 1)}{12}\)
Answered by Pragya Singh | 1 year agoRelated Questions
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