SN EN ISO 20988 : 2007
Current
The latest, up-to-date edition.
AIR QUALITY - GUIDELINES FOR ESTIMATING MEASUREMENT UNCERTAINTY
Hardcopy
09-01-2007
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Basic concepts
5.1 Outline
5.2 Measurement uncertainty
5.3 Correction for systematic effects
5.4 Provision of input data
6 Problem specification
6.1 Objectives
6.2 Measurement
6.3 Uncertainty parameters
6.4 Input data
6.4.1 General
6.4.2 Assessment of representativeness
6.5 Effects not described by series of
observations
7 Statistical analysis
7.1 Objectives
7.2 Indirect approach
7.3 Direct approach
7.4 Statistical validity
8 Estimation of variances and covariances
8.1 General
8.2 Variance estimates of Type A
8.3 Variance estimates of Type B
8.4 Estimation of covariances
9 Evaluation of uncertainty parameters
9.1 Objective
9.2 Combined standard uncertainty
9.3 Expanded uncertainty
9.3.1 General
9.3.2 Expanded uncertainty of results exhibiting
a Gaussian distribution
10 Reporting
Annex A (informative) Testing a coverage probability
Annex B (informative) Type A evaluation methods for
experimental designs A1 to A8
Annex C (informative) Examples
Bibliography
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