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CHAIN INDEX - ISI

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French Equivalent: Indice en chaîne - ISI

Definition:
An index number in which the value at any given period is related to a base in the previous period, as distinct from one which is related to a fixed base.

Context:
The comparison of non-adjacent periods is usually made by multiplying consecutive values of the index numbers, which, as it were, form a chain from one period to another.

In practice chain index numbers are usually formed from weighted average of link-relatives, namely the values of magnitudes for a given period divided by the corresponding values in the previous period.

Source Publication:
The International Statistical Institute, “The Oxford Dictionary of Statistical Terms”, edited by Yadolah Dodge, Oxford University Press, 2003.

Cross References:
Chain indices - SNA
Fixed base index
Index number

Version Indicator: ISI

Statistical Theme: Methodological information (metadata)

Glossary Output Segments:
SDMX

Created on Tuesday, May 21, 2002

Last updated on Wednesday, April 07, 2004