ДСТУ ISO 13528:2016 Статистические методы для применения во время проверки профессионального уровня с помощью межлабораторных сравнений (ISO 13528:2015, IDT)

ПІДТВЕРДЖУВАЛЬНЕ ПОВІДОМЛЕННЯ

Державне підприємство
«Український науково-дослідний і навчальний центр
проблем стандартизації, сертифікації та якості» (
   
(ДП «УкрНДНЦ»))

Наказ від 11.08.2016 № 236 (у редакції наказу від 27.04.2017 № 99)

ISO 13528:2015

Statistical methods for use in proficiency testing by interlaboratory comparison

прийнято як національний стандарт
методом «підтвердження» за позначенням
 

ДСТУ ISO 13528:2016
(ISO 13528:2015, IDT)

Статистичні методи для застосування під час перевірки
професійного рівня за допомогою міжлабораторних порівнянь

З наданням чинності від 2016–09–01

Contents

Foreword

0 Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 General principles

4.1 General requirements for statistical methods

4.2 Basic model

4.3 General approaches for the evaluation of performance

5 Guidelines for the statistical design of proficiency testing schemes

5.1 Introduction to the statistical design of proficiency testing schemes

5.2 Basis of a statistical design

5.3 Considerations for the statistical distribution of results

5.4 Considerations for small numbers of participants

5.5 Guidelines for choosing the reporting format

6 Guidelines for the initial review of proficiency testing items and results

6.1 Homogeneity and stability of proficiency test items

6.2 Considerations for different measurement methods

6.3 Blunder removal

6.4 Visual review of data

6.5 Robust statistical methods

6.6 Outlier techniques for individual results

7 Determination of the assigned value and its standard uncertainty

7.1 Choice of method of determining the assigned value

7.2 Determining the uncertainty of the assigned value

7.3 Formulation

7.4 Certified reference material

7.5 Results from one laboratory

7.6 Consensus value from expert laboratories

7.7 Consensus value from participant results

7.8 Comparison of the assigned value with an independent reference value

8 Determination of criteria for evaluation of performance

8.1 Approaches for determining evaluation criteria

8.2 By perception of experts

8.3 By experience from previous rounds of a proficiency testing scheme

8.4 By use of a general model

8.5 Using the repeatability and reproducibility standard deviations from a previous collaborative study of precision of a measurement method

8.6 From data obtained in the same round of a proficiency testing scheme

8.7 Monitoring interlaboratory agreement

9 Calculation of performance statistics

9.1 General considerations for determining performance

9.2 Limiting the uncertainty of the assigned value

9.3 Estimates of deviation (measurement error)

9.4 z scores

9.5 z' scores

9.6 Zeta scores (ζ)

9.7 En scores

9.8 Evaluation of participant uncertainties in testing

9.9 Combined performance scores

10 Graphical methods for describing performance scores

10.1 Application of graphical methods

10.2 Histograms of results or performance scores

10.3 Kernel density plots

10.4 Bar-plots of standardized performance scores

10.5 Youden Plot

10.6 Plots of repeatability standard deviations

10.7 Split samples

10.8 Graphical methods for combining performance scores over several rounds of a proficiency testing scheme

11 Design and analysis of qualitative proficiency testing schemes (including nominal and ordinal properties)

11.1 Types of qualitative data

11.2 Statistical design

11.3 Assigned values for qualitative proficiency testing schemes

11.4 Performance evaluation and scoring for qualitative proficiency testing schemes

Annex A (normative) Symbols

Annex B (normative) Homogeneity and stability of proficiency test items

Annex C (normative) Robust analysis

Annex D (informative) Additional Guidance on Statistical Procedures

Annex E (informative) Illustrative Examples

Bibliography