Understanding the meaning of accuracy,trueness and precision |
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Authors: | Antonio Menditto Marina Patriarca Bertil Magnusson |
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Institution: | 1.Department of Food Safety and Public Veterinary Health,Istituto Superiore di Sanità,Rome,Italy;2.SP Swedish National Testing and Research Institute,Bor?s,Sweden |
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Abstract: | Clear definitions of basic terms, used to describe the quality of measurements, is essential for communication among scientists
as well as when reporting measurement results to clients. Even if appropriate definitions are given in international standards
and guidelines, the understanding of some basic terms sometimes proves difficult. The reasons for this are various, e.g.,
the same words being defined rather differently in encyclopaedias and in international standards as well as concepts, well
established in some languages, that may be relatively new in other national communities and at large in the international
one. Here we present a matrix intended to clarify the relationships between the type of error affecting an analytical measurement,
the respective qualitative concepts (performance characteristics) and their quantitative expression.
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Keywords: | Terminology Accuracy Trueness Precision |
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