Rounding error effects in the presence of underlying measurement error

A previous related paper considered rounding error effects in the presence of underlying measurement error and presented a Bayesian approach to estimate instrument input random error standard deviation. This addendum to the previous paper emphasizes that the effects of random error depend on the tru...

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Veröffentlicht in:Accreditation and quality assurance 2012-10, Vol.17 (5), p.485-490
Hauptverfasser: Burr, Tom, Croft, Stephen, Hamada, Michael S., Vardeman, Stephen, Weaver, Brian
Format: Artikel
Sprache:eng
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Zusammenfassung:A previous related paper considered rounding error effects in the presence of underlying measurement error and presented a Bayesian approach to estimate instrument input random error standard deviation. This addendum to the previous paper emphasizes that the effects of random error depend on the true (and usually unknown) value of the measurand, in terms of both the variance and the item-specific bias. However, it is shown that if we assume that the true values are uniformly distributed, then instrument variance and item-specific bias can be combined into an “effective random error variance” and a strategy to estimate the effective random error variance is provided.
ISSN:0949-1775
1432-0517
DOI:10.1007/s00769-012-0902-6