BS ISO 5725-2:1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Accuracy (trueness and precision) of measurement methods and results Basic methods for the determination of repeatability and reproducibility of a standard measurement method
Hardcopy , PDF
27-01-2020
English
12-11-2002
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Foreword
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 general mean and variances
7.5 Establishing a functional relationship between
precision values and the mean level m
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
Annex A (normative) Symbols and abbreviations used in ISO 5725
Annex 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)
Annex C (informative) Bibliography
Figures
Gives a detailed practical description of the basic method for routine use in estimating the precision of measurement methods. Concerned exclusively with measurement methods which yield measurements on a continuous scale and give a single value as the test result. Coverage includes: statistical functions, executive functions, supervisors, operators, and layout of the experiment.
| Committee |
SS/6
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| DevelopmentNote |
Together with BS ISO 5725-1, BS ISO 5725-3, BS ISO 5725-4, BS ISO 5725-5 and BS ISO 5725-6, supersedes BS 5497-1(1987) Supersedes 90/97779 DC (03/2002)
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| DocumentType |
Standard
|
| Pages |
62
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 5725-2:1994 | Identical |
| PD 6686:2006 | Guidance on directives, regulations and standards related to prevention of fire and explosion in the process industries |
| BS 903-2:1997 | Physical testing of rubber Guide to the application of statistics to rubber testing |
| BS 6200-5:1997 | Sampling and analysis of iron, steel and other ferrous metals Guidelines on statistical procedures |
| DD ENV 12142:1997 | Method for determination of stable hydrogen isotope ratio (<sup>2</sup>H/<sup>1</sup>H) of water from fruit juices, using isotope ratio mass spectrometry |
| BS 6002-2:2007 | Sampling procedures for inspection by variables General guide to single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection of independent quality characteristics |
| 13/30258710 DC : 0 | BS 1881-124 - TESTING CONCRETE - PART 124: METHODS FOR ANALYSIS OF HARDENED CONCRETE |
| 05/30134582 DC : DRAFT JUN 2005 | BS 6002-1 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 1: SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION FOR A SINGLE QUALITY CHARACTERISTIC AND A SINGLE AQL |
| ASTM D 7437:2008 | Standard Test Method for Temperature and Hard Water Stability of Engine Coolants |
| BS EN 1528-1:1997 | Fatty food. Determination of pesticides and polychlorinated biphenyls (PCBs) General |
| BS EN 1376:1997 | Foodstuffs. Determination of saccharin in table top sweetener preparations. Spectrometric method |
| BS EN 12145:1997 | Fruit and vegetable juices. Determination of total dry matter. Gravimetric method with loss of mass on drying |
| BS EN ISO 13468-1:1997 | Plastics. Determination of the total luminous transmittance of transparent materials Single-beam instrument |
| DEFSTAN 05-71(PT2)/1(2006) : 2006 | ACCEPTANCE SAMPLING PROCEDURES FOR PROOF WITH RESPECT TO RECTANGULAR REFERENCE TARGETS - PART 2: ACCURACY PROOF - SINGLE SAMPLING PLANS FOR INDEPENDENT DISTURBANCES IN AZIMUTH AND ELEVATION |
| DD ENV 12140:1997 | Method for determination of stable carbon isotope ratio (<sup>13</sup>C/<sup>12</sup>C) of sugars from fruit juices, using isotope ratio mass spectrometry |
| 11/30246289 DC : 0 | BS 1881-119:2011 - TESTING CONCRETE - METHOD FOR DETERMINATION OF COMPRESSIVE STRENGTH USING PORTIONS OF BEAMS BROKEN IN FLEXURE (EQUIVALENT CUBE METHOD) |
| BS 8855-2:2000 | Soil analysis Method for determination of coal tar-derived phenolic compounds |
| BS EN 12146:1997 | Fruit and vegetable juices. Enzymatic determination of sucrose content. NADP spectrometric method |
| BS EN 12148:1997 | Fruit and vegetable juices. Determination of hesperidin and naringin in citrus juices. Method using high performance liquid chromatography |
| BS 4551:2005+A2:2013 | Mortar. Methods of test for mortar and screed. Chemical analysis and physical testing |
| BS 6995:1997 | Method for evaluation of vulcanization characteristics of styrene-butadiene rubber (SBR, YSBR) (emulsion and solution-polymerized types) |
| BS 1881-119:2011 | Testing concrete Method for determination of compressive strength using portions of beams broken in flexure (equivalent cube method) |
| BS 4401-6:1996 | Methods of test for meat and meat products Determination of chloride content (Volhard method) |
| BS 6002-1:2007 | Sampling procedures for inspection by variables Guide to single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL |
| BS 6043-2.11:1995 | Methods of sampling and test for carbonaceous materials used in aluminium manufacture. Electrode coke Determination of volatile matter content |
| BS 4551(2005) : 2005 | MORTAR - METHODS OF TEST FOR MORTAR AND SCREED - CHEMICAL ANALYSIS AND PHYSICAL TESTING |
| BS 1881-113:2011 | Testing concrete Method for making and curing no-fines test cubes |
| BS 4401-5:1996 | Methods of test for meat and meat products Determination of free fat content |
| BS 1881-122:2011 | Testing concrete Method for determination of water absorption |
| BS 598-105:2000 | Sampling and examination of bituminous mixtures for roads and other paved areas Methods of test for the determination of texture depth |
| 11/30246287 DC : 0 | BS 1881-113:2011 - TESTING CONCRETE - METHOD FOR MAKING AND CURING NO-FINES TEST CUBES |
| BS 6002-3:2005 | Sampling procedures for inspection by variables Guide to double sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection |
| 03/102300 DC : DRAFT NOV 2003 | BS 6002-3 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 3: DOUBLE SAMPLING PLANS INDEXED BY AQL |
| 09/30142765 DC : 0 | BS 8482 - CEREALS - METHOD FOR DETERMINATION OF SCREENINGS AND ADMIXTURE CONTENT OF WHEAT (TRITICUM AESTIVUM L.) AND DURUM WHEAT (TRITICUM DURUM DESF.) |
| 05/30134584 DC : DRAFT JUN 2005 | BS 6002-2 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 2: GENERAL SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION OF INDEPENDENT QUALITY CHARACTERISTICS |
| BS 2782-5.532A(1997) : 1997 | METHODS OF TESTING PLASTICS - OPTICAL AND COLOUR PROPERTIES, WEATHERING - PLASTICS - DETERMINATION OF THE TOTAL LUMINOUS TRANSMITTANCE OF TRANSPARENT MATERIALS - SINGLE-BEAM INSTRUMENT |
| BS EN 12147:1997 | Method for determination of titratable acidity of fruit and vegetable juices |
| BS EN 12143:1997 | Fruit and vegetable juices. Estimation of soluble solids content. Refractometric method |
| BS EN 1378:1997 | Foodstuffs. Determination of aspartame in table top sweetener preparations. Method by high performance liquid chromatography |
| BS 4325-12:1996 | Methods for analysis of oilseed residues Determination of glucosinolates content by high-performance liquid chromatography |
| BS 1881-124:2015 | Testing concrete Methods for analysis of hardened concrete |
| DD ENV 12141:1997 | Method for determination of stable oxygen isotope ratio (<sup>18</sup>O/<sup>16</sup>O) of water from fruit juices, using isotope ratio mass spectrometry |
| ASTM D 7437 : 2008 : R2013 | Standard Test Method for Temperature and Hard Water Stability of Engine Coolants |
| BS EN 1379:1997 | Foodstuffs. Determination of cyclamate and saccharin in liquid table top sweetener preparations. Method by high performance liquid chromatography |
| BS EN 1377:1997 | Foodstuffs. Determination of acesulfame K in table top sweetener preparations. Spectrometric method |
| 11/30242744 DC : 0 | BS 1881-122:2011 - TESTING CONCRETE - PART 122: METHOD FOR DETERMINATION OF WATER ABSORPTION |
| BS EN ISO 11214:1996 | Modified starch. Determination of carboxyl group content of oxidized starch |
| BS EN 12144:1997 | Fruit and vegetable juices. Determination of total alkalinity of ash. Titrimetric method |
| 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 Guide 33:2015 | Reference materials — Good practice in using reference materials |
| 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 3534-2:2006 | Statistics — Vocabulary and symbols — Part 2: Applied statistics |
| 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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