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  • BSI
    BS ISO 21748:2017 Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty evaluation
    Edition: 2017
    $497.46
    / user per year

Description of BS ISO 21748:2017 2017

This document gives guidance for

  • evaluation of measurement uncertainties using data obtained from studies conducted in accordance with ISO 5725‑2, and

  • comparison of collaborative study results with measurement uncertainty (MU) obtained using formal principles of uncertainty propagation (see Clause 14).

ISO 5725‑3 provides additional models for studies of intermediate precision. However, while the same general approach may be applied to the use of such extended models, uncertainty evaluation using these models is not incorporated in this document.

This document is applicable to all measurement and test fields where an uncertainty associated with a result has to be determined.

This document does not describe the application of repeatability data in the absence of reproducibility data.

This document assumes that recognized, non-negligible systematic effects are corrected, either by applying a numerical correction as part of the method of measurement, or by investigation and removal of the cause of the effect.

The recommendations in this document are primarily for guidance. It is recognized that while the recommendations presented do form a valid approach to the evaluation of uncertainty for many purposes, it is also possible to adopt other suitable approaches.

In general, references to measurement results, methods and processes in this document are normally understood to apply also to testing results, methods and processes.



Standard NumberBS ISO 21748:2017
TitleGuidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty evaluation
StatusConfirmed
Publication Date2017-07-10
ReplacesBS ISO 21748:2010
Identical National Standard OfISO 21748:2017
DescriptorsBias, Estimation, Comparative tests, Reproducibility, Measurement, Probability theory, Statistical methods of analysis, Measurement characteristics, Statistical testing
ICS17.020 Metrology and measurement in general
CommitteeSS/6
ISBN978 0 580 94905 0
PublisherBSI
Pages52

The following editions for this book are also available...

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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