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Publication Citation: Combining Results from Multiple Evaluations of the Same Measurand

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Author(s): Raghu N. Kacker; Klaus-Dieter Sommer;
Title: Combining Results from Multiple Evaluations of the Same Measurand
Published: December 01, 2011
Abstract: According to the Guide to the Expression of Uncertainty in Measurement (GUM), a result of measurement consists of a measured value together with its associated standard uncertainty. The measured value and the standard uncertainty are interpreted as the expected value and the standard deviation of a state-of-knowledge probability distribution attributed to the measurand. We discuss the term metrological compatibility introduced by the International Vocabulary of Metrology, third edition (VIM3) for lack of significant differences between two or more results of measurement for the same measurand. Sometimes a combined result of measurement from multiple evaluations of the same measurand is needed. We propose an approach for determining a combined result which is metrologically compatible with the contributing results.
Citation: Journal of Research (NIST JRES) -
Volume: 116
Issue: 6
Pages: pp. 809 - 820
Keywords: consensus value; interlaboratory evaluations; uncertainty in measurement
Research Areas: Math
PDF version: PDF Document Click here to retrieve PDF version of paper (245KB)