Search results
In metrology, measurement uncertainty is the expression of the statistical dispersion of the values attributed to a quantity measured on an interval or ratio scale.
27 sie 2023 · Learn how to measure, report and calculate the uncertainty of data in physics. Understand the concepts of accuracy, precision, discrepancy and significant figures with examples and exercises.
29 wrz 2010 · Learn what measurement uncertainty is and how to evaluate it using the GUM and the Monte Carlo method. NIST provides a web application, a tutorial, and references for metrologists.
12 lip 2023 · Chemists describe the estimated degree of error in a measurement as the uncertainty of the measurement, and they are careful to report all measured values using only significant figures, numbers that describe the value without exaggerating the degree to which it is known to be accurate.
Define accuracy and precision. Distinguish exact and uncertain numbers. Correctly represent uncertainty in quantities using significant figures. Apply proper rounding rules to computed quantities.
This document provides guidance on the expression of uncertainty in measurement, based on the Joint Committee for Guides in Metrology (JCGM) recommendations. It covers the rationale, scope, parts and application of the Guide to the Expression of Uncertainty in Measurement (GUM).
5 kwi 2001 · The definition of uncertainty in measurement according to ISO is: ‘parameter, associated with a result of a measurement that characterises the dispersion of the values that could be reasonably attributed to the measurand’.
