正态分布是典型的钟形曲线，这在统计学中经常出现。
A normal distribution is the classic bell curve that appears so frequently in statistics.
在统计学中，风险管理的标准方法是基于“钟形曲线”（或曰正态分布）的，绝大多数结果分布在中间，极端情况十分罕见。
The standard statistical approach to risk management is based on a “bell curve” or normal distribution, in which most results are in the middle and extremes are rare.
计量资料差异性比较采用单因素方差分析，非正态分布资料经正态转换后再作统计学处理。
Difference of measurement data was compared with single factor analysis of variance. After normal transformation, the non-normal distribution data were conducted with statistical disposal.
方法以统计学的正态分布与中心极限定理为理论基础，结合免疫进化的思想，提出免疫控制图原理及学习算法；
MethodsBased on the theory of normal distribution and central limit theorem of the statistics, the immune control chart is proposed, which combines the immune idea.
本文研究如何用地质统计学方法处理服从对数正态分布的化探数据的问题。
This paper studies how to use the geostatistical method in processing geochemical data, which follows the lognormal distribution.
研究地质统计学基础理论和5种克里格法意义，本文认为数据的正态分布不是地质统计学估计方法的必要条件。
From the study of basic geostatistics theories and the meaning of 5 kinds of kriging methods, this dissertation gives the conclusion that the normal distribution of data is not a necessary condition.
研究地质统计学基础理论和5种克里格法意义，本文认为数据的正态分布不是地质统计学估计方法的必要条件。
From the study of basic geostatistics theories and the meaning of 5 kinds of kriging methods, this dissertation gives the conclusion that the normal distribution of data is not a necessary condition.
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