measurement accuracy

Every measurement is subject to a certain measurement uncertainty, which is expressed in the measurement result. The measurement accuracy is reflected in the approximation of the measured value to the true measurand.

In measurement accuracy, a distinction is made between random measurement uncertainties and systematic measurement uncertainties. The random measurement uncertainties cannot be corrected specifically, whereas the systematic measurement uncertainties can be corrected mathematically.

InDIN 1319, the "true" value of the measurand is described as an ideal value which is normally not known. In contrast, the "correct" value of the measurand is a "known" value that is used as a reference.