UNI ISO/TS 21749 : 2009

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Current The latest, up-to-date edition.

MEASUREMENT UNCERTAINTY FOR METROLOGICAL APPLICATIONS - REPEATED MEASUREMENTS AND NESTED EXPERIMENTS

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Published date: 26-03-2009

Publisher: Ente Nazionale Italiano di Unificazione (UNI)

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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Statistical methods of uncertainty evaluation
  4.1 Approach of the Guide to the expression
      of uncertainty of measurement
  4.2 Check standards
  4.3 Steps in uncertainty evaluation
  4.4 Examples in this Technical Specification
5 Type A evaluation of uncertainty
  5.1 General
  5.2 Role of time in Type A evaluation of uncertainty
  5.3 Measurement configuration
  5.4 Material inhomogeneity
  5.5 Bias due to measurement configurations
6 Type B evaluation of uncertainty
7 Propagation of uncertainty
  7.1 General
  7.2 Formulae for functions of a single variable
  7.3 Formulae for functions of two variables
8 Example - Type A evaluation of uncertainty from
  a gauge study
  8.1 Purpose and background
  8.2 Data collection and check standards
  8.3 Analysis of repeatability, day-to-day and
      long-term effects
  8.4 Probe bias
  8.5 Wiring bias
  8.6 Uncertainty calculation
Annex A (normative) - Symbols
Bibliography

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This Technical Specification follows the approach taken in the Guide to the expression of the uncertainty of measurement (GUM) and establishes the basic structure for stating and combining components of uncertainty.

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Committee	CT 16
Document Type	Technical Specification
ISBN
Pages
Published
Publisher	Ente Nazionale Italiano di Unificazione (UNI)
Status	Current

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Equivalent Standard(s)	Relationship
ISO/TS 21749:2005	Identical

Standards Referencing This Book - (Show below) - (Hide below)

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO/IEC Guide 98:1993	Guide to the expression of uncertainty in measurement (GUM)
ISO 5725-3:1994	Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate measures of the precision of a standard measurement method
ISO 5725-6:1994	Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values
ISO Guide 35:2017	Reference materials Guidance for characterization and assessment of homogeneity and stability
ISO 5725-4:1994	Accuracy (trueness and precision) of measurement methods and results Part 4: Basic methods for the determination of the trueness of a standard measurement method
ISO/IEC Guide 99:2007	International vocabulary of metrology Basic and general concepts and associated terms (VIM)
ISO/TS 21748:2004	Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty estimation
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 3534-3:2013	Statistics — Vocabulary and symbols — Part 3: Design of experiments
ISO 5725-5:1998	Accuracy (trueness and precision) of measurement methods and results — Part 5: Alternative methods for the determination of the precision of a standard measurement method
ISO 3534-1:2006	Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability

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