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Data evaluation of key comparisons involving several artefacts

Cox, M G; Harris, P M; Woolliams, E R (2005) Data evaluation of key comparisons involving several artefacts. In: Proceedings of AMCTM 2005, June 2005, Lisbon, Portugal.

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Abstract

Key comparison data evaluation can be influenced by many factors including artefact instability, covariance effects, analysis model, and consistency of model and data. For a comparison involving several artefacts, further issues concern the manner of determination of a key comparison reference value and degrees of equivalence. This paper discusses such issues for key comparisons comprising a series of linked bilateral measurements, proposing a solution approach. An application of the approach to the spectral irradiance key comparison CCPR K1-a is given.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Keywords: correlation, least-squares, consistency, covariance, model, consistency, reference value, degree of equivalence, bilateral measurement, spectral irradiance, CCPR
Subjects: Mathematics and Scientific Computing
Mathematics and Scientific Computing > Measurement Uncertainties
Last Modified: 02 Feb 2018 13:16
URI: http://eprintspublications.npl.co.uk/id/eprint/3803

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