[VIM3] 2.19 random measurement error

random error of measurement, random error
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component of measurement error that in replicate measurements varies in an unpredictable manner


NOTE 1 A reference quantity value for a random measurement error is the average that would ensue from an infinite number of replicate measurements of the same measurand.

NOTE 2 Random measurement errors of a set of replicate measurements form a distribution that can be summarized by its expectation, which is generally assumed to be zero, and its variance.

NOTE 3 Random measurement error equals measurement error minus systematic measurement error.



2 Measurement