根据截尾均值、平尾均值的定义和截尾正态分布，本文得到了这两种均值都是最或然估计量。
The maximum likelihood estimators(MLE) of means and standard deviations and the asymptotic distribution of likelihood ratio statistic are given.
首先对一类总体讨论了截尾均值的渐近最优性，然后给出了更一般情形总体参数最优截尾估计的一个表达式。
For a kind of population, the asymptotic best property of trimmed mean is discussed. Then, a expression of the best trimmed estimate of population parameters is given.
在均值已知的情况下，提出变点的截尾估计方法，以消除厚尾随机变量序列中较多“奇异”点对估计结果的影响；
We proposed a new method of truncating estimation when the means are known, which can weaken the influence of outliers.
本文对带有右截尾数据的有重复因子试验，提出了另一种分析位置效应和散度效应的方法：首先，在每一个试验点，对重复试验观察值用极大似然法估计出均值和方差；
A method is presented for estimating the location and dispersion effects from these experiments. Firstly, we estimate the variance and the mean of each cell with maximum likelihood;
本文对带有右截尾数据的有重复因子试验，提出了另一种分析位置效应和散度效应的方法：首先，在每一个试验点，对重复试验观察值用极大似然法估计出均值和方差；
A method is presented for estimating the location and dispersion effects from these experiments. Firstly, we estimate the variance and the mean of each cell with maximum likelihood;
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