I.S. EN ISO 4259-1:2017&A1:2019&A2:2020
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Petroleum and related products - Precision of measurement methods and results - Part 1: Determination of precision data in relation to methods of test - Amendment 1 (ISO 4259-1:2017/Amd 1:2019)
Hardcopy , PDF
English
25-01-2021
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Stages in the planning of an interlaboratory study for the determination of the precision of a test method
5 Statistical treatment of ILS results
6 Analysis of variance, calculation and expression of precision estimates 7 R/r ratio
Annex A (normative) Determination of number of samples required
Annex B (informative) Derivation of formula for estimating the number of laboratories and samples required to meet minimum 30 degrees of freedom
Annex C (normative) Notation and tests
Annex D (normative) Illustration of procedures using ILS results for Bromine Number and statistical tables
Annex E (normative) Types of dependence and corresponding transformations
Annex F (normative) Weighted linear regression analysis
Annex G (normative) Rules for rounding
Annex H (normative) GESD technique to simultaneously identify multiple outliers in a data set
Annex I (informative) Glossary
Bibliography
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