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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 ?
In a strong editorial, The Age, the city's morning broadsheet, said: "The suggestion that there are too many foreign horses in the field this year and that "our Cup" may soon no longer be within the grasp of the humble Australian stayer is nonsense of a meanly parochial kind.
Is Tony Blair really happy for us to be compared so meanly with America?
No other Zimbabwe player managed to pick up the tempo as Andy Caddick, Darren Gough, and Craig White, bowled so meanly in those vital overs from the 40th to the 50th.
What struck me as being particularly churlish is that Trump not only did not show up in Lyon for the soccer finals where the American national women's team was playing; by his own admission, he only watched the game, in part, while offering tepid or meanly mouthed congratulations.
And also the person who wipes the cobwebs off cameras at Wimbledon, who is so meanly paid they've jacked it in.
No one's in the chair--come on, come on, Sweeney's waiting!" a warm spotlight found this scribbler seated in Row 11 Seat 16 (melen Dank, Opernhaus Zurich) as Terfel bellowed meanly and pointed a threatening index finger.
(I'm sure many Chronicle readers have pulled on the invisible stetson and squinted meanly like Clint Eastwood when facing their own personal "high noon".) Sometimes it can end tragically, sometimes it can end comically.
e I-PACE range starts at PS59,995 after you've deducted the PS3,500 government plug-in car grant (meanly just cut from PS4,500) and tops out at PS77,995 (grant included) for a bells and whistle First Edition model.
They went for his jugular, telling him to stop his tribal conglomeration thingy, with some even meanly pointing out that the function was not a bullfighting ceremony (he is a professed bullfighter).He was dressed down by his followers, including flamboyant city lawyer Donald Kipkorir, who accused Dr Khalwale of political charlatanry, and for lacking political ideology, moral compass and absence of a higher calling.
For example, when she complains there's too little time: "You do have six weeks off a year, though -- I envy you that." Not meanly, and not every time, just honestly.
I have no idea what I did to make her treat me so meanly. Right now she isn't talking to me.