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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.. All measurements are subject to uncertainty and a measurement result is complete only when it is accompanied by a statement of the associated uncertainty, such as the standard deviation.
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The measurement uncertainty budget is determined once and remains constant. With a constant measurement uncertainty budget, complete data records can now be acquired. The measurement uncertainty applies to every single measurement point. If the measurement uncertainty is constant, this simplifies the further processing based on the data records.
ISO 14253-1:2013 Part 1: Decision rules for proving conformity or nonconformity with specifications; ISO 14253-2:2011 Part 2: Guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification; ISO 14253-3:2011 Part 3: Guidelines for achieving agreements on measurement uncertainty ...
Uncertainty propagation is the quantification of uncertainties in system output(s) propagated from uncertain inputs. It focuses on the influence on the outputs from the parametric variability listed in the sources of uncertainty. The targets of uncertainty propagation analysis can be:
Essentially, the mean is the location of the PDF on the real number line, and the variance is a description of the scatter or dispersion or width of the PDF. To illustrate, Figure 1 shows the so-called Normal PDF , which will be assumed to be the distribution of the observed time periods in the pendulum experiment.
In physical experiments uncertainty analysis, or experimental uncertainty assessment, deals with assessing the uncertainty in a measurement.An experiment designed to determine an effect, demonstrate a law, or estimate the numerical value of a physical variable will be affected by errors due to instrumentation, methodology, presence of confounding effects and so on.
In the UK, where all companies are required to file in iXBRL, the main commercial accounting packages all provide iXBRL export of financial reports. The financial report is produced as a Microsoft Word or Microsoft Excel document, and a "Tagging Program" is used to add the XBRL concept metadata and to export the document as Inline XBRL.