caa a22 4500 605465479 CHVBK 20210128100302.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00769-014-1093-0 doi (NATIONALLICENCE)springer-10.1007/s00769-014-1093-0 Trueness, precision and accuracy: a critical overview of the concepts as well as proposals for revision [Elektronische Daten] [Enrico Prenesti, Fabio Gosmaro] Many parameters are defined by international scientific committees to describe the performances of a measuring system functioning according to a given measurement procedure. Acareful inspection of several international and national documents in matters of measurement reveals inconsistencies in the definition of some fundamental terms. Thispaper discusses the meaning currently attributed to trueness, precision and accuracy assuming as a reference the International Vocabulary of Metrology 2012 (VIM). We support that accuracy cannot be intended as composed by trueness and precision (as declared by various standards of international—as ISO—or national organisms), since trueness and precision require large number (infinite number, according to VIM 2012) of replicate measured quantity values to be assessed while accuracy refers to a single measured quantity value, according to widespread current definitions. As to VIM and other scientific organisms, accuracy can be intended only in a qualitative fashion, avoiding to associate numbers with it. Hence, a measurement result unbiased and precise isaccurate. We propose to intend the term trueness only in anideal meaning and to introduce the concept of exactness(error approach) correctly describing the matching between a measurement result—calculated from a large number of replicate measured quantity values—and an accepted reference quantity value. The range of variability of a single result of measurement can be assessed by way of the measurement uncertainty(uncertainty approach), which can be quantified by constructing the uncertainty budget and cannot be neither considered nor used as an expression of accuracy. Springer-Verlag Berlin Heidelberg, 2014 Trueness nationallicence Precision nationallicence Accuracy nationallicence Terminology nationallicence Measurement quality nationallicence Measurement uncertainty nationallicence Prenesti Enrico Dipartimento di Chimica, Università degli Studi di Torino, Via Pietro Giuria 5, 10125, Turin, Italy aut Gosmaro Fabio Dipartimento di Chimica, Università degli Studi di Torino, Via Pietro Giuria 5, 10125, Turin, Italy aut Accreditation and Quality Assurance Springer Berlin Heidelberg 20/1(2015-02-01), 33-40 0949-1775 20:1<33 2015 20 769 https://doi.org/10.1007/s00769-014-1093-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00769-014-1093-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prenesti Enrico Dipartimento di Chimica, Università degli Studi di Torino, Via Pietro Giuria 5, 10125, Turin, Italy aut NATIONALLICENCE 700 1- Gosmaro Fabio Dipartimento di Chimica, Università degli Studi di Torino, Via Pietro Giuria 5, 10125, Turin, Italy aut NATIONALLICENCE 773 0- Accreditation and Quality Assurance Springer Berlin Heidelberg 20/1(2015-02-01), 33-40 0949-1775 20:1<33 2015 20 769