ISO/TR 14468:2010 PDF

Name: ISO/TR 14468:2010 — Selected illustrations of attribute agreement analysis
SKU: ISO/TR 14468:2010
Price: 25 EUR
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Selected illustrations of attribute agreement analysis

Название (английский):

ISO/TR 14468:2010

Selected illustrations of attribute agreement analysis

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 42
Дата публикации:: 7 декабря 2010 г.
Издание:: ISO TR 14468 edition 1 version 1
ICS:: 03.120.30

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Описание (английский):

ISO/TR 14468:2010 assesses a measurement process where the characteristic(s) being measured is (are) in the form of attribute data (including nominal and ordinal data). ISO/TR 14468:2010 provides examples of attribute agreement analysis (AAA) and derives various results to assess closeness of agreement amongst appraisers, such as agreement within appraisers, agreement between appraisers, agreement of each appraiser vs. a standard, and agreement of all appraisers vs. a standard.

Abstract

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Стандарты, упомянутые в описании

Overview

ISO/TR 14468:2010 - "Selected illustrations of attribute agreement analysis" - is an informative Technical Report from ISO that describes how to evaluate measurement systems when the characteristics being measured are attribute data (nominal, ordinal or binary). The report provides a generic framework for Attribute Agreement Analysis (AAA), explains relevant statistics (percentage agreement, kappa, Kendall coefficients), and illustrates the methodology with five practical annex case studies (e.g., liquid crystal display manufacture, technical support triage, tasting tests, thermistor defects, assessment of disability after stroke). Note: as a Technical Report, ISO/TR 14468 is informative and intended to illustrate methods rather than impose normative requirements.

Key topics

Scope and purpose: assessment of measurement processes where data are categorical - to judge agreement within appraisers, between appraisers, each appraiser vs a standard, and all appraisers vs a standard.

Five-step AAA procedure (generic):

State objectives
Describe the measurement process (appraisers, procedures, conditions, data type)
Design the sampling plan
Analyse results
Provide conclusions and suggestions

Agreement metrics:

Percentage of agreement (P %) - point estimate for agreement proportion (P% = n_match / n_samples × 100%).
Kappa statistic (κ) - measures agreement beyond chance; two main variants: Cohen’s kappa (fixed appraisers) and Fleiss’s kappa (appraisers sampled from a group). Kappa ranges −1 to +1; report gives practical thresholds (κ > 0.9 excellent; κ < 0.7 needs improvement; κ < 0.4 inadequate; commonly desired κ ≥ 0.7).
Kendall’s coefficients for ordinal data (Kendall’s W and Kendall’s tau) when magnitude/order matters.

Hypothesis testing: use Z-statistic for κ (Z = κ / SEκ) and p-values (commonly 0.05) to test κ > 0.

Applications

ISO/TR 14468 is useful for organizations and professionals who need to validate or improve categorical measurement processes:

Quality engineers and manufacturing (product accept/reject decisions, visual inspections)

Six Sigma/continuous improvement teams assessing measurement system capability for categorical defects

Clinical and sensory researchers (diagnosis agreement, taste panels, disability assessment)

Laboratory or technical support centres for triage classification reliability

Auditors and compliance teams verifying measurement consistency vs a standard

Practical value

Provides a clear, systematic AAA workflow and statistical tools to quantify and interpret agreement.

Includes real-world illustrative annexes to guide sampling, analysis and reporting.

Helps determine whether a categorical measurement system is adequate for decision-making or needs corrective action.

ISO/TR 14468:2010 PDF

Abstract

Похожие стандарты

Overview

Key topics

Applications

Practical value

Related standards

Технические детали

SIST ISO 3534-1:2008

Statistics - Vocabulary and symbols - Part 1: General statistical terms and terms used in probability

BS ISO 3534-2:2006

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