ISO 5725-4:2020 测量方法和结果的精确度（真实和精确） 第4部分：使用标准测量方法的精度测定基本方法

标准编号：ISO 5725-4:2020

中文名称：测量方法和结果的精确度（真实和精确） 第4部分：使用标准测量方法的精度测定基本方法

英文名称：Accuracy (trueness and precision) of measurement methods and results — Part 4: Basic methods for the determination of the trueness of a standard measurement method

发布日期：2020-03

标准范围

1.1本文件-指定用于估计测量方法的偏差和应用测量方法时的实验室偏差的基本方法；-提供了一种基本方法的实用途径，用于估计测量方法的偏差和实验室偏差的常规使用；-为所有参与设计、执行或分析测量结果以估计偏差的人员提供简要指导。1.2它只涉及在连续尺度上进行测量并给出单个值作为测量结果的测量方法，尽管该单个值可以是根据一组观测值计算的结果。1.3当测量方法已经标准化并且所有测量都按照该测量方法进行时，本文件适用。注:在ISO/IEC指南99:2007（VIM）中，“测量程序”（2.6）是与本文件中使用的术语“测量方法”相关的类似术语。1.4本文件仅适用于可以建立可接受的参考值以使用该值替代真实值的情况，例如:-合适的参考材料；-合适的测量标准；-涉及合适的测量方法；-合适制备的已知样品。1.5本文件仅适用于一次估计一个属性的偏差就足够的情况。如果一个特性测量中的偏差受到任何其他特性水平的影响（即，它不考虑任何影响量的干扰），则不适用。ISO 5725-6考虑了两种测量方法真实性的比较。

1.1 This document— specifies basic methods for estimating the bias of a measurement method and the laboratory bias when a measurement method is applied;— provides a practical approach of a basic method for routine use in estimating the bias of measurement methods and laboratory bias;— provides a brief guidance to all personnel concerned with designing, performing or analysing the results of the measurements for estimating bias.1.2 It is concerned exclusively with measurement methods which yield measurements on a continuous scale and give a single value as the measurement result, although the single value can be the outcome of a calculation from a set of observations.1.3 This document applies when the measurement method has been standardized and all measurements are carried out according to that measurement method.NOTE In ISO/IEC Guide 99:2007(VIM), "measurement procedure" (2.6) is an analogous term related to the term "measurement method" used in this document.1.4 This document applies only if an accepted reference value can be established to substitute the true value by using the value, for example:— of a suitable reference material;— of a suitable measurement standard;— referring to a suitable measurement method;— of a suitable prepared known sample.1.5 This document applies only to the cases where it is sufficient to estimate bias on one property at a time. It is not applicable if the bias in the measurement of one property is affected by the level of any other property (i.e. it does not consider interferences by any influencing quantity). Comparison of the trueness of two-measurement methods is considered in ISO 5725-6.

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