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

作　　者：许辉 王金花 周茜 逄昔莎 XU Hui;WANG Jinhua;ZHOU Xi;PANG Xisha(Bureau Veritas Cigna(Shandong)Detection Technology Co.,Ltd.,Qingdao 266101,China;Technology Center of Qingdao Customs,Qingdao 266109,China;Qingdao Vland Biotech Group Co.,Ltd.,Qingdao 266102,China)

机构地区：[1]必维信诺(山东)检测技术有限公司,山东青岛266101 [2]青岛海关技术中心,山东青岛266109 [3]青岛蔚蓝生物集团有限公司,山东青岛266102

出　　处：《现代食品》2022年第7期22-27,共6页Modern Food

基　　金：山东省地标项目“高盐食品中铅、镉、铜、镍、锌、钒、钴、铀的测定电感耦合等离子体质谱法”。

摘　　要：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.

关 键 词：Horwitz方程 经典统计 迭代法 标准化四分位距法 

分 类 号：TB114[理学—概率论与数理统计]