统计方法在能力验证过程中的影响分析

Analysis of the Influence of Statistical Methods in the Process of Proficiency Testing

本文介绍了目前国内外能力验证中常用的4种统计方法,即经典统计法、迭代法、中位值和标准化四分位距法和Horwitz方程法。通过对实际数据计算示例,探讨了目前国内外能力验证机构常用统计方法的局限性和适用性。根据结果比对,认为Horwitz方程法在能力验证的统计方面,准确性更高、适用性更强。

This paper introduces four statistical methods commonly used in capability verification at home and abroad,that is classical statistical method,iterative method,median value and standardized quartile distance method,Horwitz equation method.Through calculating examples of actual data,this paper probes into the limitations and applicability of the statistical methods commonly used by the domestic and foreign proficiency testing institutions at present,and according to the comparison of the results,it is considered that the Horwitz equation method has higher accuracy and stronger applicability in the statistics of proficiency testing.