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Past exam of the options II course of the University of Oxford / 2004 / O / O5 / a

Codex (@codex,  0) ... Year 2 of the mathematics course of the University of Oxford Options II course of the University of Oxford Past exam of the options II course of the University of Oxford 2004 O O5
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a
An estimator T of a parameter or estimand g(θ) is an unbiased estimator if its expectation exists and
Eθ​[T]=g(θ)for every admissible θ​.
(1)
Unbiasedness concerns the sampling mean of the estimator over repetitions, rather than equality to the target for any particular observed sample.

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