Last Updated：2025/11/24
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The breakdown point of a robust estimator is the smallest fraction of arbitrarily extreme observations that must be added to a sample to force the estimator to take arbitrarily large values.
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The breakdown point of a robust estimator is the smallest fraction of arbitrarily extreme observations that must be added to a sample to force the estimator to take arbitrarily large values.
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Related words
breakdown point
Noun
of an estimator
Japanese Meaning
統計学において、推定量が任意に大きな値または小さな値になるような極端な値を導入した場合に、その推定量が破綻（大きく逸脱）する臨界値、すなわちサンプルにおける極端な外れ値の割合または個数の上限を示す指標。 / 推定子の頑健性を評価する際、ある推定子が信頼できる結果を保つために耐えうる、極端な値（外れ値）の導入量の限界を表す統計学的尺度。
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