Tools
Uncertainty Budget (GUM)
…A and Type B uncertainty components with distribution divisors, root-sum-of-squares and a coverage factor to an expanded uncertainty per the GUM.
Global Search
Search Metrology Atlas
One query across documents (page by page), definitions, standards, questions, news, tools and training.
16 results for “GUM”
Extends GUM methods to multivariate measurement models with correlated output quantities. Freely available. JCGM/BIPM Uncertainty
Guidance on constructing measurement models — the step the GUM assumes has already happened. Freely available. JCGM/BIPM Uncertainty
The GUM: the internationally agreed framework for evaluating and expressing measurement uncertainty — Type A/B evaluation, combination, and expanded uncertainty. Freely available from the…
Monte Carlo propagation of full probability distributions through a measurement model — for cases where the law of propagation of uncertainty is inadequate. Freely available…
'The GUM' is shorthand for a whole family of JCGM documents, and knowing which member answers which question saves real time. JCGM 100:2008…
Round an expanded uncertainty to two significant figures and the measured value to match, per GUM 7.2.6 reporting convention.
Dictionary
Rectangular distribution
…Used for Type B components where only limits are known; its standard uncertainty is a/√3. GUM (JCGM 100:2008) 4.3.7 Uncertainty
Dictionary
Triangular distribution
…a. Used when values near the centre are more likely; its standard uncertainty is a/√6. GUM (JCGM 100:2008) 4.3.9 Uncertainty
The European accreditation guide applying GUM methods to routine calibration, with worked examples across disciplines. Freely available. EA (European co-operation for Accreditation) Uncertainty