Z比分数不同统计方法在实验室间比对试验结果评价中的比较
Comparison of Different Statistical Methods of Z-Score in the Evaluation of Inter Laboratory Compara-tive Experiments
王思明 1宋利军 1詹月辰1
作者信息
- 1. 中国石化销售股份有限公司华北分公司 天津 300384
- 折叠
摘要
Z比分数是评定实验室间比对试验结果的重要方法.系统介绍了计算Z比分数的经典统计法、四分位数稳健统计法、迭代稳健统计法(算法A)和Q/Hampel稳健统计法.并以中国石化销售企业组织的某次实验室间比对试验92号车用汽油(VIB)硫含量数据为统计对象,比较了四种统计方法Z比分数评价结果的差异性.为实验室间比对试验选择合理有效的统计分析方法,提高实验室的检测能力和管理水平提供了参考.
Abstract
Z-score is an important method for eval-uating the results of inter laboratory comparative ex-periments.The classic statistical methods,quartile robust statistical methods,iterative robust statistical methods(Algorithm A),and Q/Hampel robust sta-tistical methods for calculating Z-ratio scores are systematically introduced.And based on the sulfur content data of#92 vehicle gasoline(VIB)in an in-ter laboratory comparative test organized by a sales enterprise of SINOPEC Corporation,the differences in the evaluation results of the Z-ratio scores of four statistical methods were compared.This can provide a reference for selecting reasonable and effective sta-tistical analysis methods for inter laboratory compara-tive experiments,and improving the laboratory's de-tection ability and management level.
关键词
实验室/比对试验/Z比分数/统计/结果/比较Key words
laboratory/comparative experiment/Z-score/statistics/results/comparison引用本文复制引用
出版年
2024
NETL
NSTL
万方数据