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CONSISTENCY IN AGGREGATION

Statistics Directorate    
Definition:
An index is said to be consistent in aggregation when the index for some aggregate has the same value whether it is calculated directly in a single operation, without distinguishing its components, or it is calculated in two or more steps by first calculating separate indices, or sub-indices, for its components, or subcomponents, and then aggregating them, the same formula being used at each step.

Source Publication:
ILO, IMF, OECD, Eurostat, UNECE, World Bank, 2004, Producer Price Index Manual: Theory and Practice, International Monetary Fund, Washington DC.

Cross References:
Consistency

Hyperlink:
http://www.imf.org/external/np/sta/tegppi/index.htm

Statistical Theme: Prices and purchasing power partities

Created on Monday, February 17, 2003

Last updated on Monday, April 15, 2013