# Base period

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{{Short description|Economic measurement}}In [economics](/source/economics), a '''base period''' or '''reference period''' is a point in time used as a reference point for comparison with other periods.<ref name="uslabor">{{cite web|url=http://www.bls.gov/bls/glossary.htm|title=BLS Information |date=February 28, 2008|work=Glossary|publisher=U.S. Bureau of Labor Statistics Division of Information Services |accessdate=2009-05-05| archiveurl= https://web.archive.org/web/20090506220213/http://www.bls.gov/bls/glossary.htm| archivedate= 6 May 2009 | url-status= live}}</ref><ref name="investopedia">{{cite web|url=http://www.investopedia.com/terms/b/baseperiod.asp|title=Base Period|publisher=Investopedia|accessdate=2009-05-05}}</ref> It is generally used as a benchmark for measuring financial or economic data.<ref name="investw">{{cite web|url=http://www.investorwords.com/429/base_period.html|title=base period|publisher=investorwords.com|accessdate=2009-05-05|archive-date=2009-08-22|archive-url=https://web.archive.org/web/20090822090706/http://www.investorwords.com/429/base_period.html|url-status=dead}}</ref> Base periods typically provide a [point of reference](/source/reference_point_(disambiguation)) for economic studies, consumer demand, and unemployment benefit claims.

In [public transport scheduling](/source/public_transport_timetable), the base period is the period of reduced service on weekdays that generally exists between the morning and afternoon [rush hour](/source/rush_hour)s.

==See also==
* [Base period price](/source/Base_period_price)
* [Bureau of Labor Statistics](/source/Bureau_of_Labor_Statistics)
* [Economic indicator](/source/Economic_indicator)
* [Gross domestic product](/source/Gross_domestic_product)
* [Consumer price index](/source/Consumer_price_index)

==References==
{{Reflist}}

==External links==
* [http://www.bls.gov/bls/glossary.htm Base period in glossary], [U.S. Bureau of Labor Statistics Division of Information Services](/source/U.S._Bureau_of_Labor_Statistics_Division_of_Information_Services)
* [http://www.investopedia.com/terms/b/baseperiod.asp Base Period], Investopedia

Category:Economic data
Category:Public transport

{{econ-stub}}

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