ANOTHER ARGUMENT TO CONSIDER THE RELIABILITY OF THE UNCERTAINTY TYPE B SIMILAR TO TYPE A

Edivaldo A. Bulba, ; Victor R. Svoll

Abstract

The ISO-GUM express that the standard deviation of the experimental standard deviation of the mean <i>q</i> obtained for ratio <i>&sigma;[s(q)]/&sigma;(q)</i> has a not negligible value for practical values of <i>n</i>, and therefore that Type A evaluations of the standard uncertainty are not necessarily more reliable than Type B evaluations. Although this correct comparison either, the assertion based on the value of the <i>&sigma;(q)</i> is the not best, in way that this work to consider other relation as argument for this comparison.

Keywords

uncertainty of the uncertainty, standard deviation distribution

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PWC-2006-TC7-005u.pdf

DOI

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IMEKO TC

TC7 - Measurement Science

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