The sum of the squares of the
standard deviations, expressing the contributions to the overall
precision from various sources of uncertainty.
Source:
PAC, 1994, 66, 595
(Nomenclature for the presentation of results of chemical analysis (IUPAC Recommendations
1994))
on page 601
PAC, 1990, 62, 2167
(Glossary of atmospheric chemistry terms (Recommendations 1990))
on page 2218
,
