In this paper, the bias of the ratio estimator and the estimateofmean 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。
2
A point estimate for the meanof the execution time is 102.570 milliseconds.
执行时间的平均估值点是102.570毫秒。
3
Researchers estimate that the accelerating flow of glaciers in West Antarctica is contributing about 10% of the observed rise in the mean global sea level.