标准摘要
[中文适用范围]： 本文件规定了使用来自标准测试方法常规用户支持的能力验证计划（PTS）的数据定期监测所达到的测试方法精度与标准测试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按照标准测试方法进行的能力验证（PT）而设计，具有已公布的再现性，假定这些产品是均匀的，并且数据分布近似正态。 此外，它还适用于随着时间和运输的推移（已知）稳定的感兴趣的属性。 本文件规定了在 PT 程序与已发布程序中实现的再现性条件下标准偏差的统计比较方法。 此比较的目的是查明已发布的再现性精度是否能够代表 PT 计划的常规参与者可实现的再现性精度。 本文件还提供了如何使用 PT z 分数来监控单个参与者随时间的表现的指南（参见附件 B）。 [外文原描述]： 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).
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