Let X, X2,..., Xn be a random sample from a distribution having finite variance o. Show...

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Let X₁, X2,..., Xn be a random sample from a distribution having finite variance o². Show that S² = ₁ (X-X² is an unbiased estimator of ² i=1 n-1 Hint: Write S² = n-1 (₁X² — n.X²) and compute E(S²). i=1 i Let X₁, X2,..., Xn be a random sample from a distribution having finite variance o². Show that S² = ₁ (X-X² is an unbiased estimator of ² i=1 n-1 Hint: Write S² = n-1 (₁X² — n.X²) and compute E(S²). i=1 i

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