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Glossary of the 1993 SNA - Definition of Term

DefinitionAdditivity is a property pertaining to a set of interdependent index numbers related by definition or by accounting constraints under which an aggregate is defined as the sum of its components; additivity requires this identity to be preserved when the values of both an aggregate and its components in some reference period are extrapolated over time using a set of volume index numbers.
It is acknowledged that this glossary uses descriptions of the OECD glossary of statistical terms, the Glossary of the System of National Accounts 1993 and the UN classifications registry.
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