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Using ruggedness tests to estimate uncertainty
Project Code: E01036
01/01/2012
Birkbeck College
Thompson, M
We have compared precisions obtained by means of specially designed ruggedness tests applied to ten analytical determinations applied to foodstuffs with the reproducibility precisions provided by collaborative trials and with the Horwitz function. We found that the ruggedness tests underestimated the reproducibility variability consistently for those analytical methods requiring empirical calibration. The ruggedness tests provided on average a precision comparable with repeatability.This finding has implications for the estimation of uncertainty.
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