CONCEPTS AND DEFINITIONS

Eurostat's Concepts and Definitions Database





Term extension 
Statistical concept


Definition 
A process that transforms microdata into aggregatelevel 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.




Link(s) to statistical data 
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Related terms

Term

Term extension



Estimation

Statistical concept

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Data set

Statistical concept

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Frequency

Statistical concept

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Disaggregation

Classifications

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Microdata

Statistical concept

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Data compilation

Statistical concept

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Statistical theme(s)

SPECIALISED GLOSSARY  SDMX MCV (Metadata Common Vocabulary)
Metadata


Other languages

Term

Term extension



Aggregation/Disaggregation


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(Deutsch)


