Last Updated:2025/12/05

When designing an unbiased estimator for a parameter, you should compare its variance to the Cramér-Rao bound to determine how close it is to the theoretical optimum.

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When designing an unbiased estimator for a parameter, you should compare its variance to the Cramér-Rao bound to determine how close it is to the theoretical optimum.

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パラメータの不偏推定量を設計する際には、その分散を不偏推定量の分散に対する下限と比較して、理論的最適にどれだけ近いかを判断すべきだ。

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