deviation, d

The difference between an observed value and the arithmetic mean of the set to which it belongs. It can be calculated by the formula:
d i = x i − x ̄
Source:
PAC, 1994, 66, 595 (Nomenclature for the presentation of results of chemical analysis (IUPAC Recommendations 1994)) on page 599
Orange Book, p. 4
See also:
VIM