Dictionary · General
Measurement accuracy
Closeness of agreement between a measured value and a true value of the measurand. A qualitative concept — a measurement is more accurate when it offers smaller error, but accuracy itself is not a number.
Related terms
More from General
Conventional quantity value
A quantity value attributed to a quantity by agreement for a given purpose — the conventional value of local gravity, or the conventional mass of a weight.
VIM (JCGM 200:2012) 2.12
Primary reference measurement procedure
A reference procedure used to obtain a result without relation to a standard for a quantity of the same kind — the route by which primary standards are realized.
VIM (JCGM 200:2012) 2.8
Measured quantity value
The quantity value representing a measurement result — the value actually obtained for the measurand in a given measurement.
VIM (JCGM 200:2012) 2.10
Measurement method
A generic description of the logical organization of operations used in a measurement — substitution method, differential method, null method.
VIM (JCGM 200:2012) 2.5
Systematic measurement error
The component of measurement error that in replicate measurements remains constant or varies predictably. Known systematic errors are compensated by correction.
VIM (JCGM 200:2012) 2.17
Influence quantity
A quantity that, in a direct measurement, does not affect the quantity actually measured but does affect the relation between the indication and the result — ambient temperature is the classic example.
VIM (JCGM 200:2012) 2.52