The results showed that the trimmed mean and Winsorized mean could describe the baseline values accurately.
结果表明通过稳健估计方法中的切尾均值和Winsor化均值可较准确地表达环境的基线值。
With regard to statistical characteristics of valuation multiples in the field,the paper suggests using trimmed mean rather than mean or median due to its better robust efficiency.
考虑实践中估值乘数的统计特征,分析了切尾均值及其两个极端——算术均值和中位数的耐抗性和效率稳健性,给出了适用于估值实践的简单切尾规则;建议用可比公司估值乘数的切尾均值作为目标公司估值乘数的点估计,并用自助法求得其近似置信限。
By analyzing and comparing the statistical characteristic and difference between sample mean,trimmed mean and Winsorised mean,the paper demonstrates the importance of substitutiy Winsoried mean for sample mean in item evaluating science and technology awards.
分析、比较了样本均值、截尾均值、平尾均值在统计学意义下的特性和差别,阐述了在武器装备科学技术奖成果评定中,以平尾均值替代样本均值的必要性和意义。
This paper based on the definition of trimmed mean,winsorised mean and trimmed normal distribution,we obtained that the means are the maximum likeihood estimation(MLE),their influence function are derived,the robustness can be analysed.
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。
By analyzing and comparing the statistical characteristic and difference between sample mean,trimmed mean and Winsorised mean,the paper demonstrates the importance of substitutiy Winsoried mean for sample mean in item evaluating science and technology awards.
分析、比较了样本均值、截尾均值、平尾均值在统计学意义下的特性和差别,阐述了在武器装备科学技术奖成果评定中,以平尾均值替代样本均值的必要性和意义。
This paper based on the definition of trimmed mean,winsorised mean and trimmed normal distribution,we obtained that the means are the maximum likeihood estimation(MLE),their influence function are derived,the robustness can be analysed.
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。
Among them,the major transformations what against the sulfur flotation include: concentrating of zinc tailings,adding acid,non-featured operations,using 11# oil as frother,the remodelling of flotator,etc.
其中,针对硫浮选进行的改造主要有锌尾浓缩、加酸、无精选作业、起泡剂11#油的应用以及浮选机改型等等,取得了显著的效果。
