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PERIODICITY - IMF

Statistics Directorate    
Definition:
Periodicity refers to the frequency of compilation of the data.

Context:
In SDMX, "Periodicity" is closely associated with "Frequency" to form a single entity, named "Frequency and Periodicity". While frequency refers to the time interval between the observations of a time series, periodicity refers to the frequency of compilation of the data (e.g., a time series could be available at annual frequency but the underlying data are compiled monthly, thus have a monthly periodicity).

The periodicity of a particular data category is determined by several factors, including the ease of observation or compilation and the needs of analysis.

Periodicity is usually expressed in terms of divisions of the calendar (e.g. monthly, quarterly).

Periodicity of original data refers to the frequency of compilation of data by the source agency, i.e. the national agency or international organisation that provided the information. This agency may or may not be the agency responsible for the original collection of the data from respondent or administrative sources.

Source Publication:
International Monetary Fund (IMF), "Guide to the Data Dissemination Standards, Module 1: The Special Data Dissemination Standard", Washington, May 1996.

Cross References:
Data
Frequency
Release calendar
Special Data Dissemination Standard (SDDS)
Statistical Data and Metadata Exchange (SDMX)
Time series

Hyperlink:
http://www.imf.org/external/pubs/ft/sdds/guide/2007/eng/sddsguide.pdf

Version Indicator: IMF

Statistical Theme: Methodological information (metadata)

Glossary Output Segments:
SDMX

Created on Tuesday, September 25, 2001

Last updated on Tuesday, June 11, 2013