Using MINITAB software for teaching measurement uncertainty

2014 Joint IMEKO TC1-TC7-TC13 Symposium: Measurement Science Behind Safety and Security

Zanobini, Andrea^1

Department of Information Engineering, University of Florence, Via Santa Marta, Florence

3-50139, Italy^1

关键词: Confidence interval;    Half-width;    Measurand;    Measurement uncertainty;    MINITAB;    Standard deviation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/588/1/012025/pdf
DOI  :  10.1088/1742-6596/588/1/012025

来源: IOP

【 摘 要 】

The concept of measurement uncertainty should be regarded not only related to the concept of doubt about the validity of the measurement result, but also to the quantization of this concept. In this sense the measurement uncertainty is that parameter associated with the result characterizing the dispersion of the values that could reasonably be assigned to the measurand (or more properly to its representation through a model). This parameter may be for example a multiple of the standard deviation but especially, and more importantly, the half width of an interval with a predetermined level of confidence or trust. In these terms in this paper I attempt, with the help of MINITAB software, to analyze this parameter; with simple and quick operations to evaluate the mean, the standard deviation and the confidence interval and by the use of several plotted graphs.