Looking at obtaining the unbiased estimator of σ^2, i know how to do it for σ, to obtain(adsbygoogle = window.adsbygoogle || []).push({});

1/x(bar), was wondering how to obtain for σ^2, i guess you just dont square bot sides. It should tale the form of kƩ(x_i)^2.

many thanks any help would be much appreciated.

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# Unbiased estimator for The exponential

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