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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 4
BKCSDE 35(4)
April 20, 2014

Title	An Approach for the Uncertainty Evaluation of the Overall Result from Replications of Measurement: Separately Combining Individual Uncertainty Components According to their ‘systematic’ and ‘random’ Effects
Author	In Jung Kim*, Byungjoo Kim, Euijin Hwang
Keywords	Uncertainty, Replications of measurement, Systematic effect, Random effect
Abstract	In our previous articles, an approach has been proposed for the evaluation of the uncertainty of overall result from multiple measurements. In the approach, uncertainty sources were classified into two groups: the first including those giving same ‘systematic’ effect on each individual measurement and the second including the others giving ‘random’ effect on each individual measurement and causing a variation among individual measurement results. The arithmetic mean of the replicated measurements is usually assigned as the value for the overall result. Uncertainty of the overall result is determined by separately evaluating and combining an overall uncertainty from sources of the ‘systematic’ effect and another overall uncertainty from sources of the ‘random’ effect. This conceptual approach has been widely adopted in chemical metrology society. In this study, further logical proof with more detailed mathematical expressions is provided on the approach
Page	1057 - 1060
Full Text	PDF

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