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PD ISO/TS 17503:2015

Current

Current

The latest, up-to-date edition.

Statistical methods of uncertainty evaluation. Guidance on evaluation of uncertainty using two-factor crossed designs

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

11-30-2015

US$242.23
Excluding Tax where applicable

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Conduct of experiments
6 Preliminary review of data - Overview
7 Variance components and uncertainty estimation
8 Application to observations on a relative scale
9 Use of variance components in subsequent measurements
10 Alternative treatments
11 Treatment with missing values
Annex A (informative) - Examples
Bibliography

Defines the estimation of uncertainties on the mean value in experiments conducted as crossed designs, and the use of variances extracted from such experiments and applied to the results of other measurements (for example, single observations).

Committee
SS/6
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Current

This Technical Specification describes the estimation of uncertainties on the mean value in experiments conducted as crossed designs, and the use of variances extracted from such experiments and applied to the results of other measurements (for example, single observations).

This Technical Specification covers balanced two-factor designs with any number of levels. The basic designs covered include the two-way design without replication and the two-way design with replication, with one or both factors considered as random. Calculations of variance components from ANOVA tables and their use in uncertainty estimation are given. In addition, brief guidance is given on the use of restricted maximum likelihood estimates from software, and on the treatment of experiments with small numbers of missing data points.

Methods for review of the data for outliers and approximate normality are provided.

The use of data obtained from the treatment of relative observations (for example, apparent recovery in analytical chemistry) is included.

Standards Relationship
ISO/TS 17503:2015 Identical

ISO/TS 21749:2005 Measurement uncertainty for metrological applications — Repeated measurements and nested experiments
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/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
ISO 3534-1:2006 Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability

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