乔木层株数随胸径分布呈现截尾正态分布。
Diameter distribution of tree stratum reveals truncated normal distribution.
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.
本文提出用截尾正态分布作为单件、小批量生产的仪器零件、机器零件尺寸误差分布的理论模型。
A curtailed normal distribution as a theoretical model for the error distribution of size of the machine parts and instrument parts in single - part or small-lot production is proposed in this paper.
对给定的寿命试验数据x，利用似然比检验法可对该数据是来自截尾指数分布还是截尾正态分布进行判别，但却很难求出似然统计量的分布形式。
For a life data x, whether it comes from the censoring exponential distribution or the censoring normal distribution, it can use the likelihood ratio test to make a decision.
传统的多元回归分析只适用于正态分布和完全数据的情况，而本文则将其推广到威布尔分布、极值分布和截尾数据的情况。
The present method extends the traditional multiple regression analysis that is only suitable to normal distribution and complete data to Weibull distribution, extreme distribution and censored data.
传统回归分析只适用于来自正态分布的完全数据，对于截尾数据或威布尔分布数据则无能为力，目前工程上只能采用成组试验方法，结果导致试验量很大。
The traditional regression analysis is only suitable to complete data from normal distribution. In engineering, censored data is analyzed by group test method that requires a large number of samples.
传统回归分析只适用于来自正态分布的完全数据，对于截尾数据或威布尔分布数据则无能为力，目前工程上只能采用成组试验方法，结果导致试验量很大。
The traditional regression analysis is only suitable to complete data from normal distribution. In engineering, censored data is analyzed by group test method that requires a large number of samples.
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