NF EN ISO 4259-3

NF EN ISO 4259-3

February 2020
Standard Current

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

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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Main informations

Collections

National standards and national normative documents

Publication date

February 2020

Number of pages

24 p.

Reference

NF EN ISO 4259-3

ICS Codes

75.080   Petroleum products in general

Classification index

M07-033-3

Print number

1

International kinship

ISO 4259-3:2020

European kinship

EN ISO 4259-3:2020
Sumary
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

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).

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Exigences du programme d'essais d'aptitude
  • 5 Comparaison entre la fidélité obtenue par PT et la fidélité publiée
  • Annexe A Exemples pratiques du test F
  • Annexe B Utilisation des scores z pour contrôler les performances d'essais d'aptitude d'un participant donné
  • Bibliographie
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