Title: performance score
Long Title: IUPAC Gold Book - performance score
DOI: 10.1351/goldbook.08095
Status: current

Definition
Statistic, derived from a result reported by a participant in a proficiency testing scheme, used in interpretation of participant performance and to allow comparison with defined objectives.

Notes
1) The purpose of a performance score is to express the deviation of the reported value from the assigned value in a proficiency testing scheme in a manner that allows comparison with performance criteria.
2) Names and defining equations of frequently used performance scores are listed in Table 1. Their definitions and interpretations are given in ISO/IEC 17043 and ISO 13528.

Related Terms
- : https://goldbook.iupac.org//terms/view/1
- proficiency testing: https://goldbook.iupac.org//terms/view/08101
- proficiency testing scheme: https://goldbook.iupac.org//terms/view/08104

Source
- PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1031 (https://doi.org/10.1515/pac-2019-0819)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/08095/html
- json: https://goldbook.iupac.org/terms/view/08095/json
- xml: https://goldbook.iupac.org/terms/view/08095/xml

Citation: Citation: 'performance score' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08095
License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.
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Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-04-18T19:04:44+00:00