How to encompass an uncorrected bias into the expanded uncertainty with a fixed coverage probability: calculation procedures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F17%3A43892983" target="_blank" >RIV/44555601:13520/17:43892983 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00769-017-1268-6" target="_blank" >http://dx.doi.org/10.1007/s00769-017-1268-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00769-017-1268-6" target="_blank" >10.1007/s00769-017-1268-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

How to encompass an uncorrected bias into the expanded uncertainty with a fixed coverage probability: calculation procedures

Popis výsledku v původním jazyce

The practice in analytical and medical laboratories often necessitates evaluating the uncertainty of measurement in such a way that incorporates the bias in the expanded uncertainty of measurement instead of correcting for it. This paper presents a complete procedure for calculating the coverage interval that is delimited with one of these approaches. The obtained interval is symmetrical with respect to the uncorrected measured value (x) and has a determined coverage probability (p) under a given bias (b) and combined standard uncertainty (uc); the approach is denoted by Ue(p). A possibility of this approach was suggested by Synek (Talanta 65:829?837, 7). The stated procedure enables to choose frequently used coverage probabilities (mainly 95 % and 99 %). The calculation of the Ue(p) expanded uncertainty requires quantifying a factor that multiplies uc. Its values depend on p, on b/uc and also on the effective number of degrees of freedom(m) of uc, especially at m of a small size; these values can be found in the attached tables. Since this accurate calculation can be qualified as too complex, a simplification is recommended by using two approximations that are applicable provided m C 6.

Název v anglickém jazyce

How to encompass an uncorrected bias into the expanded uncertainty with a fixed coverage probability: calculation procedures

Popis výsledku anglicky

The practice in analytical and medical laboratories often necessitates evaluating the uncertainty of measurement in such a way that incorporates the bias in the expanded uncertainty of measurement instead of correcting for it. This paper presents a complete procedure for calculating the coverage interval that is delimited with one of these approaches. The obtained interval is symmetrical with respect to the uncorrected measured value (x) and has a determined coverage probability (p) under a given bias (b) and combined standard uncertainty (uc); the approach is denoted by Ue(p). A possibility of this approach was suggested by Synek (Talanta 65:829?837, 7). The stated procedure enables to choose frequently used coverage probabilities (mainly 95 % and 99 %). The calculation of the Ue(p) expanded uncertainty requires quantifying a factor that multiplies uc. Its values depend on p, on b/uc and also on the effective number of degrees of freedom(m) of uc, especially at m of a small size; these values can be found in the attached tables. Since this accurate calculation can be qualified as too complex, a simplification is recommended by using two approximations that are applicable provided m C 6.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10103 - Statistics and probability

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Accreditation and Quality Assurance

ISSN

0949-1775

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

179-186

Kód UT WoS článku

000405589400002

EID výsledku v databázi Scopus

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