CONCEPTS AND DEFINITIONS
Eurostat's Concepts and Definitions Database

 

Term
Aggregation
Term extension
Statistical concept
Definition
A process that transforms microdata into aggregate-level information by using an aggregation function such as count, sum average, standard deviation, etc.
Context
Aggregation denotes the compounding of primary data into an aggregate, usually for the purpose of expressing them in a summary form. For example, national income and price index numbers are aggregative, in contrast to the income of an individual or the price of a single commodity.

With standard hierarchical classifications, statistics for related categories can be grouped or collated (aggregated) to provide a broader picture, or categories can be split (disaggregated) when finer details are required and made possible by the codes given to primary observations (United Nations Glossary of Classification Terms, http://unstats.un.org/unsd/class/family/glossary_short.asp).

A special case of aggregation is the grossing up of samples.
Remark
Part of the Metadata Common Vocabulary (MCV), as published in SDMX Content-Oriented Guidelines (COG), annex 4 "Metadata Common Vocabulary", in 2009 (http://www.sdmx.org). In February 2016 the Metadata Common Vocabulary was replaced by the SDMX Glossary 2016.
Source
SDMX Metadata Common Vocabulary 2009 (MCV 2009)
Hyperlink
http://sdmx.org/
Related terms
Term Term extension    
  • Disaggregation
  • Classifications View
  • Estimation
  • Statistical concept View
    Statistical theme(s)
  • Metadata
  • Other languages
    Term Term extension    
  • Aggregation/Disaggregation
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