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.
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；
With theory of normal distribution used in the course of quality assessment, the quality's tendency call be controlled during the production at any time. And the quality stability can be guarantee.
运用正态分布理论进行生产过程中的质量评定，可随时控制和掌握生产过程中的质量动态从而保证生产质量的稳定。
Conclusion Normal distribution theory may be used in the interval estimation and hypothesis testing of rank sum.
结论对秩和与秩和比可以应用正态分布理论作区间估计和假设检验。
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