separate ratio estimate的 中文 翻译 ... estimate by ratio : 用比例估计，按比率推算 bias in the ratio estimate : 比（率）估计偏倚 bias in ratio-estimate : 比（率）估计中的偏倚 ...
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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.
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。
For the ratio estimate in two-stage sampling, the bias and mean square errors(MES) of the estimater value have been obtained, and the estimater value of the MSE has been given.
给出了二阶比估计量的偏差、估计量的均方误差以及均方误差的估计。
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