3对于许多随机变量来说，一个好的选择是正态分布，常常表现为一个钟型曲线，如图1所示。
3 For many random variables, a good choice is the normal distribution, often represented as a bell-shaped curve, shown in Figure 1.
对于残缺的样本观测数据，讨论了正态分布总体尺度参数的区间估计问题。
A question of formation confidence interval for scale parameter of normal distribution from incomplete observational data is discussed.
在机车智能故障诊断系统中的应用表明，该方法对于那些测量结果属于正态分布的参数故障阈值的设定具有指导意义。
The applications to intelligent locomotive fault diagnosis system show that the method could act as a guideline for the determination of threshold with positive distribution of fault parameters.
对于二元正态分布函数，仅需给定插值区域两边的双边界值，即可得到该区域上任意一点分布函数值。
With the given values of bivariate normal distribution function on the two biboundaries of a rectangular region, the values of distribution function on the rectangular region can be found.
对于改进型中心极限定理法，用概率密度转换器对均匀分布的随机数做密度转换，然后再累加产生正态分布的随机数。
With new Central Limit Theorem, convert the uniform random number's probability density using probability density Converter, then add all generated random Numbers.
结论：对于问卷项目的应答为连续性正态分布的数据，在拟合重复调查的情形下，可以采用两水平方差成份模型评价问卷项目应答的信度。
Conclusion:In the condition of unrepeated measurement, the variability between interviewers can be estimated by fitting two level variance component model for normally distributed 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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