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The expected value of a random variable. Arithmetic average of a sample.
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.

Arithmetic Mean Average

An average calculated by adding the value of the points in a data set and dividing the sum by the number of data points. For example, suppose one wishes to calculate the average income of a country with exactly five people in it, and their incomes are $25,000, $26,000, $43,000, $70,000, and $72,000. It is calculated as:

($25,000 + $26,000 + $43,000 + $70,000 + $72,000) / 5 = $47,200.

A limitation to the arithmetic mean average is that it can be overly affected by extremes in either direction. For example, if one of the five persons in the country earns $100 billion per year, the arithmetic mean average income would be in the billions and would not accurately count the other four citizens. For this reason, many analysts use the median in conjunction with the arithmetic mean average. The arithmetic mean average is also called simply the mean.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved


The average of a set of numbers.Contrast with median,which is the middle figure in a set of numbers,and mode,which is the value that appears most often in a set of numbers.

Example: A survey of home values in a neighborhood of nine houses obtained the following values:

The mean, or average, is the total of all values divided by 9, or $143,044.The median is the middle number when the numbers are all arranged from highest to lowest,which would be house 5, or $139,850.The mode is $139,000,because it is the number that appears most often.

The Complete Real Estate Encyclopedia by Denise L. Evans, JD & O. William Evans, JD. Copyright © 2007 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Of all the Green Meanies, Cassidy has the least interest in offing the Chanels because, as viewers know, he's in love with Chanel #3 (Billie Lourd).
The ( synopsis for next week's episode also confirmed that Chanel #5 survived the Green Meanie's attack.
We all hated being Blue Meanies. You get loads of abuse and you're put under pressure to give out as many tickets as you can."
1 Shevchenko (9-2), 2 Blue Meanie (m) (12), 3 Top Power (m) (8-13), 4 Droopys Regina (m) (7), 5 Rio Rondo (w) (8), 6 Premier Rose (w) (8).
"All the Meanies know about this but we don't do it because it's too easy to get caught.
The Meanie will hold a book signing at the Liverpool Waterstones store at 3pm.
A spokesman for The Blue Meanie said: ``As all fans of The Yellow Submarine know, Mr Meanie is the world's leading opponent of the sound of music.
When the Chief Blue Meanie checks in at Southampton on Saturday, he will embark on another first for Cunard Line.
THE little girl who sobbed on live TV as she was axed by the Britain's Got Talent judges yesterday branded Simon Cowell a "big meanie".
The 63-year-old TV meanie was caught speeding for the fourth time in two years in Portsmouth last August.
THE Beatles arch-foe The Blue Meanie is to try to bring his music-hating talent back to Merseyside -- to stop the Mathew Street Festival.
I blame the nasty, horrid meanie whose review of the Sex and the City movie in the New York Observer said: "That growth on her face just gets bigger with every close-up.