A question of formation confidence interval for scale parameter of normal distribution from incomplete observational data is discussed.
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。
The fatigue life of civil aircraft structures obeys two parameter Weibull distribution, its scatter factor is significantly different from that obeys logarithm normal distribution.
民机结构的疲劳寿命服从双参数威布尔分布，其分散系数与战斗机基于对数正态分布的疲劳寿命分散系数存在明显的不同。
In particular, we focus discussion on joint confidence sets of the parameter mean and variance when a rounded sample comes from the normal distribution with both parameters unknown.
特别地，本文集中讨论当数据是来自参数未知的正态分布四舍五入后的数据，均值和方差的联合置信集。
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