ISO/TS 21749:2005
Current
The latest, up-to-date edition.
Measurement uncertainty for metrological applications — Repeated measurements and nested experiments
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English
04-03-2005
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ISO/TS 21749:2005 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. To this basic structure, it adds a statistical framework using the analysis of variance (ANOVA) for estimating individual components, particularly those classified as Type A evaluations of uncertainty, i.e. based on the use of statistical methods. A short description of Type B evaluations of uncertainty (non-statistical) is included for completeness.
ISO/TS 21749:2005 covers experimental situations where the components of uncertainty can be estimated from statistical analysis of repeated measurements, instruments, test items or check standards.
It provides methods for obtaining uncertainties from single-, two- and three-level nested designs only. More complicated experimental situations where, for example, there is interaction between operator effects and instrument effects or a cross effect, are not covered.
ISO/TS 21749:2005 is not applicable to measurements that cannot be replicated, such as destructive measurements or measurements on dynamically varying systems (such as fluid flow, electronic currents or telecommunications systems). It is not particularly directed to the certification of reference materials (particularly chemical substances) and to calibrations where artefacts are compared using a scheme known as a "weighing design". For certification of reference materials, see ISO Guide 35.
When results from interlaboratory studies can be used, techniques are presented in the companion guide ISO/TS 21748. The main difference between ISO/TS 21748 and this Technical Specification is that the ISO/TS 21748 is concerned with reproducibility data (with the inevitable repeatability effects), whereas this Technical Specification concentrates on repeatability data and the use of the analysis of variance for its treatment.
ISO/TS 21749:2005 is applicable to a wide variety of measurements, for example, lengths, angles, voltages, resistances, masses and densities.
| DocumentType |
Technical Specification
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| Pages |
38
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| ProductNote |
THIS STANDARD HAVE CORRECT VERSION FOR EN-2005
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| PublisherName |
International Organization for Standardization
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| Status |
Current
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| Standards | Relationship |
| DD ISO/TS 21749:2005 | Identical |
| JIS Z 8404-2:2008 | Identical |
| NEN NPR ISO/TS 21749 : 2005 | Identical |
| UNI ISO/TS 21749 : 2009 | Identical |
| ISO/TS 17503:2015 | Statistical methods of uncertainty evaluation — Guidance on evaluation of uncertainty using two-factor crossed designs |
| PD ISO/TS 17503:2015 | Statistical methods of uncertainty evaluation. Guidance on evaluation of uncertainty using two-factor crossed designs |
| CEI UNI 70099 : 2010 | INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM) |
| ISO 22514-7:2012 | Statistical methods in process management Capability and performance Part 7: Capability of measurement processes |
| 15/30295576 DC : 0 | BS ISO 16331-1 - OPTICS AND OPTICAL INSTRUMENTS - LABORATORY PROCEDURES FOR TESTING SURVEYING AND CONSTRUCTION INSTRUMENTS - PART 1: PERFORMANCE OF HANDHELD LASER DISTANCE METERS |
| OIML V 2-200 : 2012 | INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM) |
| BS ISO 22514-7:2012 | Statistical methods in process management. Capability and performance Capability of measurement processes |
| 08/30193653 DC : 0 | BS ISO 17123-1 - OPTICS AND OPTICAL INSTRUMENTS - FIELD PROCEDURES FOR TESTING GEODETIC AND SURVEYING INSTRUMENTS - PART 1: THEORY |
| UNI ISO/TR 18532 : 2010 | Guide to the application of statistical methods for quality and standardization in the industrial sector |
| DIN ISO 17123-1:2016-02 (Draft) | OPTICS AND OPTICAL INSTRUMENTS - FIELD PROCEDURES FOR TESTING GEODETIC AND SURVEYING INSTRUMENTS - PART 1: THEORY (ISO 17123-1:2014) |
| 09/30205176 DC : 0 | ISO/TS 25680 - MEDICAL LABORATORIES - CALCULATION AND EXPRESSION OF MEASUREMENT UNCERTAINTY |
| 10/30219236 DC : DRAFT DEC 2010 | BS ISO 22514-7 - STATISTICAL METHODS IN PROCESS MANAGEMENT - CAPABILITY AND PERFORMANCE - PART 7: CAPABILITY OF MEASUREMENT PROCESSES |
| BS ISO 16331-1:2017 | Optics and optical instruments. Laboratory procedures for testing surveying and construction instruments Performance of handheld laser distance meters |
| 11/30218530 DC : DRAFT FEB 2011 | BS ISO 16331-1 - OPTICS AND OPTICAL INSTRUMENTS - LABORATORY PROCEDURES FOR TESTING SURVEYING AND CONSTRUCTION INSTRUMENTS - PART 1: PERFORMANCE OF HANDHELD LASER DISTANCE METERS |
| UNE-ISO/IEC GUIA 99:2012 IN | International vocabulary of metrology. Basics and general concepts and associated terms (VIM) |
| ISO/IEC Guide 99:2007 | International vocabulary of metrology Basic and general concepts and associated terms (VIM) |
| UNI ISO 22514-7:2014 | STATISTICAL METHODS IN PROCESS MANAGEMENT - CAPABILITY AND PERFORMANCE - PART 7: CAPABILITY OF MEASUREMENT PROCESSES |
| ISO/TR 18532:2009 | Guidance on the application of statistical methods to quality and to industrial standardization |
| UNI CEI 70099 : 2008 | INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM) |
| ISO 16331-1:2017 | Optics and optical instruments — Laboratory procedures for testing surveying and construction instruments — Part 1: Performance of handheld laser distance meters |
| IEEE/ANSI C63.5-2017 | American National Standard for Electromagnetic Compatibility--Radiated Emission Measurements in Electromagnetic Interference (EMI) Control--Calibration and Qualification of Antennas (9 kHz to 40 GHz) |
| IEEE/ANSI C63.23-2012 | American National Standard Guide for Electromagnetic Compatibility—Computations and Treatment of Measurement Uncertainty |
| ISO 5725-1:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions |
| 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/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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