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UNCERTAINTY OF MEASUREMENT - PART 3: GUIDE TO THE EXPRESSION OF UNCERTAINTY IN MEASUREMENT (GUM:1995) - SUPPLEMENT 1: PROPAGATION OF DISTRIBUTIONS USING A MONTE CARLO METHOD
International Organization for Standardization
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Availability date: 11/05/2021
Foreword <br>Introduction<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Conventions and notation <br>5 Basic principles<br> 5.1 Main stages of uncertainty evaluation <br> 5.2 Propagation of distributions <br> 5.3 Obtaining summary information<br> 5.4 Implementations of the propagation of distributions<br> 5.5 Reporting the results <br> 5.6 GUM uncertainty framework <br> 5.7 Conditions for valid application of the GUM uncertainty <br> framework for linear models <br> 5.8 Conditions for valid application of the GUM uncertainty <br> framework for non-linear models <br> 5.9 Monte Carlo approach to the propagation and summarizing <br> stages <br> 5.10 Conditions for the valid application of the described <br> Monte Carlo method<br> 5.11 Comparison of the GUM uncertainty framework and the <br> described Monte Carlo method<br>6 Probability density functions for the input quantities<br> 6.1 General<br> 6.2 Bayes' theorem<br> 6.3 Principle of maximum entropy<br> 6.4 Probability density function assignment for some <br> common circumstances<br> 6.4.1 General <br> 6.4.2 Rectangular distributions<br> 6.4.3 Rectangular distributions with inexactly <br> prescribed limits <br> 6.4.4 Trapezoidal distributions<br> 6.4.5 Triangular distributions <br> 6.4.6 Arc sine (U-shaped) distributions<br> 6.4.7 Gaussian distributions<br> 6.4.8 Multivariate Gaussian distributions <br> 6.4.9 t-distributions<br> 6.4.10 Exponential distributions<br> 6.4.11 Gamma distributions<br> 6.5 Probability distributions from previous uncertainty <br> calculations<br>7 Implementation of a Monte Carlo method<br> 7.1 General<br> 7.2 Number of Monte Carlo trials<br> 7.3 Sampling from probability distributions<br> 7.4 Evaluation of the model<br> 7.5 Discrete representation of the distribution function <br> for the output quantity<br> 7.6 Estimate of the output quantity and the associated <br> standard uncertainty<br> 7.7 Coverage interval for the output quantity<br> 7.8 Computation time<br> 7.9 Adaptive Monte Carlo procedure<br> 7.9.1 General<br> 7.9.2 Numerical tolerance associated with a numerical <br> value<br> 7.9.3 Objective of adaptive procedure<br> 7.9.4 Adaptive procedure<br>8 Validation of results<br> 8.1 Validation of the GUM uncertainty framework using a <br> Monte Carlo method<br> 8.2 Obtaining results from a Monte Carlo method for <br> validation purposes<br>9 Examples<br> 9.1 Illustrations of aspects of this Supplement<br> 9.2 Additive model<br> 9.2.1 Formulation<br> 9.2.2 Normally distributed input quantities<br> 9.2.3 Rectangularly distributed input quantities with <br> the same width <br> 9.2.4 Rectangularly distributed input quantities with <br> different widths<br> 9.3 Mass calibration<br> 9.3.1 Formulation<br> 9.3.2 Propagation and summarizing<br> 9.4 Comparison loss in microwave power meter calibration<br> 9.4.1 Formulation<br> 9.4.2 Propagation and summarizing: zero covariance<br> 9.4.3 Propagation and summarizing: non-zero covariance<br> 9.5 Gauge block calibration<br> 9.5.1 Formulation: model<br> 9.5.2 Formulation: assignment of PDFs<br> 9.5.3 Propagation and summarizing<br> 9.5.4 Results<br>Annex A - Historical perspective<br>Annex B - Sensitivity coefficients and uncertainty budgets<br>Annex C - Sampling from probability distributions<br> C.1 General<br> C.2 General distribution<br> C.3 Rectangular distribution<br> C.4 Gaussian distribution<br> C.5 Multivariate Gaussian distribution<br> C.6 t-distribution<br>Annex D - Continuous approximation to the distribution function <br> for the output quantity<br>Annex E - Coverage interval for the four-fold convolution of <br> a rectangular distribution<br>Annex F - Comparison loss problem<br> F.1 Expectation and standard deviation obtained analytically<br> F.2 Analytic solution for zero estimate of the voltage <br> reflection coefficient having associated zero covariance<br> F.3 GUM uncertainty framework applied to the comparison <br> loss problem<br>Annex G - Glossary of principal symbols<br>Bibliography<br>Alphabetical index
Describes a general numerical approach, consistent with the broad principles of the GUM [ISO/IEC Guide 98-3:2008, G.1.5], for carrying out the calculations required as part of an evaluation of measurement uncertainty.
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Document Type | Standard |
Status | Current |
Publisher | International Organization for Standardization |
Pages | |
ISBN | |
Committee | TMBG |