ISO 4259-3:2020 石油及相关产品 测量方法和结果的精度 第3部分：与试验方法有关的已公布的精度数据的监测和验证

标准编号：ISO 4259-3:2020

中文名称：石油及相关产品 测量方法和结果的精度 第3部分：与试验方法有关的已公布的精度数据的监测和验证

英文名称：Petroleum and related products — Precision of measurement methods and results — Part 3: Monitoring and verification of published precision data in relation to methods of test

发布日期：2020-01

标准范围

本文件规定了使用标准试验方法的常规用户支持的能力验证方案（PTS）数据，定期监测试验方法精度与标准试验方法中公布的精度的方法。本文件中的程序专门针对石油和石油相关产品的标准试验方法进行的能力验证（PT）而设计，该标准试验方法具有已公布的再现性，这些产品被认为是同质的，且数据分布大致正常。此外，它还适用于（已知）随时间和运输稳定的感兴趣财产。本文件规定了在再现性条件下，在PT程序中实现的标准偏差与公布的标准偏差进行统计比较的方法。该比较的目的是确定公布的再现性精度是否代表定期参与PT计划的参与者可以达到的精度。本文件还提供了如何使用PT z分数来监控单个参与者在一段时间内的表现的指导（见附录B）。

This document specifies the methodology for the regular monitoring of the test method precision achieved versus the precision published in the standard test method using data from proficiency testing schemes (PTSs) supported by the regular users of standard test methods.The procedures in this document are designed specifically for proficiency testing (PT) conducted on standard test methods, having a published reproducibility, for petroleum and petroleum-related products, which are presumed to be homogeneous, and where the data distribution is approximately normal. In addition, it is applicable to properties of interest that are (known to be) stable over time and transport.This document specifies the methodology for the statistical comparison of standard deviation under reproducibility conditions achieved in PT programmes versus that published.The purpose of this comparison is to find out if the published reproducibility precision is representative of that achievable by the regular participants in the PT programmes.This document also provides guidance on how to use a PT z-score to monitor an individual participant's performance over time (see Annex B).

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