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Publication Citation: Calculation of Measurement Uncertainty Using Prior Information

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Author(s): Steven D. Phillips; William T. Estler;
Title: Calculation of Measurement Uncertainty Using Prior Information
Published: November 01, 1998
Abstract: We describe the use of Bayesian inference to include prior information about the value of the measurand in the calculation of measurement uncertainty. Typical examples show this can, in effect, reduce the expanded uncertainty by up to 85 %. The application of the Bayesian approach to proving workpiece conformance to specification (as given by international standard ISO 14253-1) is presented and a procedure for increasing the conformance zone by modifying the expanded uncertainty guard bands is discussed.
Citation: Journal of Research of the National Institute of Standards and Technology
Volume: 103(6)
Pages: pp. 625 - 632
Keywords: Bayesian;bias;error;measurement uncertainty;uncertainty
Research Areas: Metrology, Manufacturing
PDF version: PDF Document Click here to retrieve PDF version of paper (119KB)