Uncertainty

uncertainty - [uncertainty] The degree to which the measured value of some quantity is estimated to vary from the true value. Uncertainty can arise from a variety of sources, including limitations on the precision or accuracy of a measuring instrument or system; measurement error; the integration of data that uses different scales or that describe phenomena differently; conflicting representations of the same phenomena; the variable, unquantifiable, or indefinite nature of the phenomena being measured; or the limits of human knowledge. Uncertainty is often used to describe the degree of accuracy of a measurement.

[Category=Geospatial ]

Source: esri, 21 September 2012 09:27:21, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation