... 比例效应定律 law of proportional effect 比率偏差 ratio deviation 必然性等价 certainty equivalence ...
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设置偏差比率 set bias ratio
偏差比率 bias ratio
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给出了分子已知情况下比率估计量的偏差和均方误差以及均方误差的估计，并对两类比率估计量进行了比较。
In this paper, the bias of the ratio estimator and the estimate of mean square errors of this estimator with known numerator have been compared and discussed.
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