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Position: Chinese Standard in English/GB/T 6379.2-2004
GB/T 6379.2-2004   Accuracy (trueness and precision) ofmeasurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method (English Version)
Standard No.: GB/T 6379.2-2004 Status:valid remind me the status change

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Implemented on:2005-1-1 Delivery: via email in 1 business day
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Standard No.: GB/T 6379.2-2004
English Name: Accuracy (trueness and precision) ofmeasurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
Chinese Name: 测量方法与结果的准确度(正确度与精密度) 第2部分:确定标准测量方法重复性与再现性的基本方法
Chinese Classification: A41    Mathematics
Professional Classification: GB    National Standard
ICS Classification: 03.120.30 03.120.30    Application of statistical methods 03.120.30
Issued by: AQSIQ; SAC
Issued on: 2004-6-2
Implemented on: 2005-1-1
Status: valid
Superseding:GB/T 6379-1986 Precision of test methods--Determination of repeatability and reproducibility for a standard test method by interlaboratory tests
GB/T 11792-1989 Precision of test methods-Check the acceptability of test results obtained under repeatability or reproducibility conditions and to determine final test results
Language: English
File Format: PDF
Word Count: 17000 words
Price(USD): 420.0
Delivery: via email in 1 business day
1.1 This Part of GB/T 6379 ― amplifies the general principles to be observed in designing experiments for the numerical estimation of the precision of measurement methods by means of a collaborative interlaboratory experiment; ― provides a detailed practical description of the basic method for routine use in estimating the precision of measurement methods; ― provides guidance to all personnel concerned with designing, performing or analyzing the results of the tests for estimating precision. Note 1: Modifications to this basic method for particular purposes are given in other parts of GB/T 6379. Appendix B provides practical examples of estimating the precision of measurement methods by exper¬iment. 1.2 This Part of GB/T 6379 is concerned exclusively with measurement methods which yield measurements on a continuous scale and give a single value as the test result, although this single value may be the outcome of a calculation from a set of observations. 1.3 It assumes that in the design and performance of the precision experiment, all the principles as laid down in GB/T 6379.1 have been observed. The basic method uses the same number of test results in each laboratory, with each laboratory analyzing the same levels of test sample; i.e. a balanced uniform-level experiment. The basic method applies to procedures that have been standardized and are in regular use in a number of laboratories. Note 2: Worked examples are given to demonstrate balanced uniform sets of test results, although in one example a variable number of replicates per cell were reported (unbalanced design) and in another some data were missing. This is because an experiment designed to be balanced can turn out to be unbalanced. Stragglers and outliers are also considered. 1.4 The statistical model of Chapter 5 of GB/T 6379.1-2004 is accepted as a suitable basis for the interpretation and analysis of the test results, the distribution of which is approximately normal. 1.5 The basic method, as described in this Part of GB/T 6379, will (usually) estimate the precision of a measurement method: a) when it is required to determine the repeatability and reproducibility standard deviations as defined in GB/T 6379.1; b) when the materials to be used are homogeneous, or when the effects of heterogeneity can be included in the precision values; c) when the use of a balanced uniform-level layout is acceptable. 1.6 The same approach can be used to make a preliminary estimate of precision for measurement methods which have not reached standardization or are not in routine use.
Foreword II Introduction III 1 Scope 2 Normative References 3 Definitions 4 Estimates of the Parameters in the Basic Model 5 Requirements for a Precision Experiment 5.1 Layout of the experiment 5-2 Recruitment of the laboratories 5.3 Preparation of the materials 6 Personnel Involved in a Precision Experiment 6.1 Panel 6.2 Statistical functions 6-3 Executive functions 6.4 Supervisors 6.5 Operators 7 Statistical Analysis of a Precision Experiment 7.1 Preliminary considerations 7.2 Tabulation of the results and notation used 7.3 Scrutiny of results for consistency and outliers 7.4 Calculation of the genera! mean and variances 7.6 Statistical analysis as a step-by-step procedure 7.7 The report to, and the decisions to be taken by, the panel 8 Statistical Tables Appendix A (Normative) Symbols and Abbreviations Used in GB/T 6379 Appendix B (Informative) Examples of the Statistical Analysis of Precision Experiments B.1 Example 1: Determination of the sulfur content of coal (Several levels with no missing or outlying data) B.2 Example 2: Softening point of pitch (Several levels with missing data) B.3 Example 3; Thermometric titration of creosote oil (Several levels with outlying data) Appendix C (Informative) Bibliography
Referred in GB/T 6379.2-2004:
* ISO 3534-1:1993 Statistics ― Vocabulary and Symbols ― Part 1: Probability and General Statistical Terms
* GB/T 6379.1-2004 Accuracy(trueness and precision) of measurement methods and results - Part 1: General principles and definitions
GB/T 6379.2-2004 is referred in:
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* GB/T 23209-2008 Determination of lutein in milk powder—HPLC-UV method
* GB/T 223.23-2008 Iron, Steel and Alloy-Determination of Nickel Content - The Dimethylglyoxime Spectrophotometric Method
* GB/T 223.40-2007 Iron, Steel and Alloy - Determination of Niobium Content by the Sulphochlorophenol S Spectrophotometric Method
* GB/T 2408-2008 Plastics - Determination of burning characteristics - Horizontal and vertical test
* GB/T 223.31-2008 Iron steel and alloy - Determination of arsenic content -Distillation-molybdenum blue spectrophotometric method
* GB/T 23374-2009 Determination of aluminium in foods - Inductively coupled plasma mass spectrometry
* GB/T 23209-2008 Determination of lutein in milk powder—HPLC-UV method
* GB/T 22983-2008 Determination of six polyether antibiotics residues in milk and milk powder - LC-MS-MS method
* GB/T 22048-2008 Toys and childrens products - Determination of phthalate plasticizers in polyvinyl chloride plastic
* GB/T 2408-2008 Plastics - Determination of burning characteristics - Horizontal and vertical test
* GB/T 223.31-2008 Iron steel and alloy - Determination of arsenic content -Distillation-molybdenum blue spectrophotometric method
* GB/T 223.23-2008 Iron, Steel and Alloy-Determination of Nickel Content - The Dimethylglyoxime Spectrophotometric Method
* GB/T 223.31-2008 Iron steel and alloy - Determination of arsenic content -Distillation-molybdenum blue spectrophotometric method
* GB/T 223.23-2008 Iron, Steel and Alloy-Determination of Nickel Content - The Dimethylglyoxime Spectrophotometric Method
* GB/T 223.4-2008 Alloyed steel - Determination of manganese content - Potentiometric or visual titration method
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* GB/T 19649-2006 Method for determination of 475 pesticides and related chemicals residues in grains - GC-MS method
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* GB/T 23374-2009 Determination of aluminium in foods - Inductively coupled plasma mass spectrometry
* GB/T 223.4-2008 Alloyed steel - Determination of manganese content - Potentiometric or visual titration method
* GB/T 223.73-2008 Iron steel and alloy - Determination of iron contents - Titanium trichloride-potassium dichromate titration method
* GB/T 223.83-2009 Steel and iron—Determination of high sulfur content—Infrared absorption method after combustion in an induction furnace
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* GB/T 223.31-2008 Iron steel and alloy - Determination of arsenic content -Distillation-molybdenum blue spectrophotometric method
* GB/T 223.43-2008 Iron steel and alloy - Determination of tungsten content - Gravimetryc method and spectrophotometric method
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* GB/T 223.75-2008 Iron steel and alloy - Determination of boron content - Methanol distillation-curcumin photometric method
* GB/T 223.79-2007 Iron and steel—Determination of multi-element contents—X-ray fluorescence spectrometry(Routine method)
* GB/T 223.80-2007 Iron steel and alloy—Determination of trace bismuth and arsenic contents—Hydride generation-atomic fluorescence spectrometric method
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* GB/T 223.82-2007 Steel and iron—Determination of hydrogen content—Inert gas impulse fusion heat conductivity method
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* GB/T 328.14-2007 Test methods for building sheets for waterproofing—Part 14:Bitumen sheets for waterproofing-flexibility at low temperature
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*GB/T 223.63-2022 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method
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*GB/T 4336-2016/XG1-2017 Carbon and low-alloy steel―Determination of multi-element contents―Spark discharge atomic emission spectrometric method (routine method), includes Amendment 1
*GB/T 3286.1-2012 Methods for chemical analysis of limestone and dolomite - Part 1: The determination of calcium oxide and magnesium oxide content - The complexometric titration method and the flame atomic absorption spectrometric method
*GB/T 40794-2021 Measurement method of irreversible magnetic flux loss due to high temperature of rare earth permanent magnet
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*GB/T 6730.24-2025 Iron ores—Determination of total rare earth contents—Arsenazo III spectrophotometric method
Code of China
Standard
GB/T 6379.2-2004  Accuracy (trueness and precision) ofmeasurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method (English Version)
Standard No.GB/T 6379.2-2004
Statusvalid
LanguageEnglish
File FormatPDF
Word Count17000 words
Price(USD)420.0
Implemented on2005-1-1
Deliveryvia email in 1 business day
Detail of GB/T 6379.2-2004
Standard No.
GB/T 6379.2-2004
English Name
Accuracy (trueness and precision) ofmeasurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
Chinese Name
测量方法与结果的准确度(正确度与精密度) 第2部分:确定标准测量方法重复性与再现性的基本方法
Chinese Classification
A41
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2004-6-2
Implemented on
2005-1-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 6379-1986 Precision of test methods--Determination of repeatability and reproducibility for a standard test method by interlaboratory tests
GB/T 11792-1989 Precision of test methods-Check the acceptability of test results obtained under repeatability or reproducibility conditions and to determine final test results
Language
English
File Format
PDF
Word Count
17000 words
Price(USD)
420.0
Keywords
GB/T 6379.2-2004, GB 6379.2-2004, GBT 6379.2-2004, GB/T6379.2-2004, GB/T 6379.2, GB/T6379.2, GB6379.2-2004, GB 6379.2, GB6379.2, GBT6379.2-2004, GBT 6379.2, GBT6379.2
Introduction of GB/T 6379.2-2004
1.1 This Part of GB/T 6379 ― amplifies the general principles to be observed in designing experiments for the numerical estimation of the precision of measurement methods by means of a collaborative interlaboratory experiment; ― provides a detailed practical description of the basic method for routine use in estimating the precision of measurement methods; ― provides guidance to all personnel concerned with designing, performing or analyzing the results of the tests for estimating precision. Note 1: Modifications to this basic method for particular purposes are given in other parts of GB/T 6379. Appendix B provides practical examples of estimating the precision of measurement methods by exper¬iment. 1.2 This Part of GB/T 6379 is concerned exclusively with measurement methods which yield measurements on a continuous scale and give a single value as the test result, although this single value may be the outcome of a calculation from a set of observations. 1.3 It assumes that in the design and performance of the precision experiment, all the principles as laid down in GB/T 6379.1 have been observed. The basic method uses the same number of test results in each laboratory, with each laboratory analyzing the same levels of test sample; i.e. a balanced uniform-level experiment. The basic method applies to procedures that have been standardized and are in regular use in a number of laboratories. Note 2: Worked examples are given to demonstrate balanced uniform sets of test results, although in one example a variable number of replicates per cell were reported (unbalanced design) and in another some data were missing. This is because an experiment designed to be balanced can turn out to be unbalanced. Stragglers and outliers are also considered. 1.4 The statistical model of Chapter 5 of GB/T 6379.1-2004 is accepted as a suitable basis for the interpretation and analysis of the test results, the distribution of which is approximately normal. 1.5 The basic method, as described in this Part of GB/T 6379, will (usually) estimate the precision of a measurement method: a) when it is required to determine the repeatability and reproducibility standard deviations as defined in GB/T 6379.1; b) when the materials to be used are homogeneous, or when the effects of heterogeneity can be included in the precision values; c) when the use of a balanced uniform-level layout is acceptable. 1.6 The same approach can be used to make a preliminary estimate of precision for measurement methods which have not reached standardization or are not in routine use.
Contents of GB/T 6379.2-2004
Foreword II Introduction III 1 Scope 2 Normative References 3 Definitions 4 Estimates of the Parameters in the Basic Model 5 Requirements for a Precision Experiment 5.1 Layout of the experiment 5-2 Recruitment of the laboratories 5.3 Preparation of the materials 6 Personnel Involved in a Precision Experiment 6.1 Panel 6.2 Statistical functions 6-3 Executive functions 6.4 Supervisors 6.5 Operators 7 Statistical Analysis of a Precision Experiment 7.1 Preliminary considerations 7.2 Tabulation of the results and notation used 7.3 Scrutiny of results for consistency and outliers 7.4 Calculation of the genera! mean and variances 7.6 Statistical analysis as a step-by-step procedure 7.7 The report to, and the decisions to be taken by, the panel 8 Statistical Tables Appendix A (Normative) Symbols and Abbreviations Used in GB/T 6379 Appendix B (Informative) Examples of the Statistical Analysis of Precision Experiments B.1 Example 1: Determination of the sulfur content of coal (Several levels with no missing or outlying data) B.2 Example 2: Softening point of pitch (Several levels with missing data) B.3 Example 3; Thermometric titration of creosote oil (Several levels with outlying data) Appendix C (Informative) Bibliography
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Keywords:
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