base period

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Base period

A particular period of time used for comparative purposes when measuring economic data.

Base Period

The period of time against which an index is measured. For example, suppose the base period is 2001 and the initial value of an index is 100. If the index is 150 in 2009, it means that the value of the index is 50% higher in 2009 than it was in 2001. It is also called the reference period.

base period

The time or period of time on which an index is based. Usually, the index is established at a value of 10 or 100 in the base year. The consumer price index of 177 in early 2002 indicated that consumer prices were 77% higher than during the base period of 1982-84. The Standard & Poor's 500 Stock Index of 1300 in early March 2002 indicated that, on average, a portfolio of blue chip stocks with a market value of $10 during the period 1941-43 (the base period) had a market value of $1,300 in early 2002. The portfolio of stocks making up the S&P 500 underwent substantial changes during the intervening years.

Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott. Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. All rights reserved.

base period

The point in time that serves as a reference for calculating financial and economic data.The base period value is usually set at 1.0 or 100, called the benchmark, for purposes of comparison,and then all other periods are either greater or less than the benchmark.

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In this article, we demonstrate how the choice of reference period affects the conclusions drawn in relation to both these questions and discuss consequences for connecting climate model projections of global temperature change to the real world.

Connecting climate model projections of global temperature change with the real world

The surviving companies are formed into a portfolio and equity market capitalization at the beginning and end of the reference period is the market valuation variable.

An examination of corporate stock buybacks: do they really create value?

"We are very pleased with the decision which has clarified the legal position in relation to how to interpret whether or not production was adversely affected during the reference period for the purposes of establishing the allocation of single payment scheme entitlements."

Family wins court battle over single farm payment; JUDGES SIDE WITH FARMER IN BATTLE WITH WELSH ASSEMBLY

cotton production by 9 percent and increased global prices for cotton by an average of 6 percent over the reference period.

U.S.-Brazil cotton agreement unlikely to benefit African producers

Over the three year reference period, Espotting grew 733% in terms of number of employees, and 65,887% in turnover.

Espotting Media 1st in IT Services sector in Europe's 500 listing

The Rural Payments Agency is to send out documentation to all farmers who received payment in the reference period (2000/02).

Rural Matters: Funding forms being sent out

The packs show farmers' historic CAP subsidy information for the 2000, 2001 and 2002 scheme years -- the reference period.

Act now on Single Farm Payments

It and the UK government opposed this, noting the pay rise came after the reference period used to calculate maternity pay, (ending 15 weeks before maternity leave).

Maternity pay case

Many of the songs lovingly reference period classics, from the infectious opening number, "Good Morning, Baltimore" (which echoes the Ronettes' "Be My Baby") to the anthemic finale, "You Can't Stop the Beat" (which pays tribute to Ike and Tina Turner's "River Deep, Mountain High").

Broadway's biggest do: take John Waters's whacked-out civil rights saga, add a backbeat by Marc Shaiman, and you get Hairspray--a big, fat hit

In the Current Employment Statistics survey of establishments, the reference period is the pay period including the 12th of the month.

Effects of events of September 11. (Labor Month in Review)

The pay reference period is set at a maximum of one calender month but in many cases will be a week.

EMPLOYMENT LAW; Are you complying with the Minimum Wage?

"The hours of non-hours work worked by a worker in a pay reference period shall be the total of the number of hours spent by him during the pay reference period in carrying out the duties required of him under his contract to do non-hours work."