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A nonnegative parameter characterizing the dispersion of values that can reasonably be attributed to a specified measurand, evaluated from the available measurement information.
wp-physics-measurement-uncertaintybipm-gum-1Each relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
A reported measurement result requires an uncertainty evaluation tied to the defined measurand, model, calibration, sampling, and stated coverage or probability convention where applicable.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
bipm-gum-1Each relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Chemical measurement uncertainty adds chemistry-specific contributions such as sampling, preparation, matrix effects, species definition, calibration, and metrological traceability to the general evaluation framework.
A more specific theory, model, entity class, or regime is obtained by restricting or extending the scope of a broader framework.
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