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Techniques for Uncertainty Analysis of Complex Measurement Processes

Summary: This article relates lessons that are useful in the analysis of uncertainties in a complex measurement process, through a case study. It distinguishes between the settings for confidence intervals and those for prediction intervals. It illustrates testing of an assumed variance, shows how to separate the variance contributors in a calibration curve, discusses the use of independence of variance components, gives first-order approximations for combining random errors, and emphasizes the necessity of writing all the contributors to uncertainty in a single mathematical expression.

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  • Topics:
  • Keywords: Uncertainty,Random effects,Measurement error,Case study,Calibration
  • Author: Atwood, Corwin L.; Engelhardt, Max
  • Journal: Journal of Quality Technology