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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 ?
The new advert will feature a Made of Meaner Stuff strapline - a darker twist on the Fabia's Made of Lovely Stuff proposition which was made famous by the 2007 Fabia "Cake" commercial.
He must've edited his work to make it concise, leaner and meaner. Or maybe we indiscriminately chopped it to make it fit
Now leaner and meaner, the steelmaker emerged from bankruptcy protection for the second time in a decade in market conditions that remain lousy, with global over capacity, weak demand and see-sawing prices.
Whatever the fate of IPv6, we fervently hope NTT overseas is leaner and meaner than it is at home.
The Colorado Department of Motor Vehicles, seeking, I suppose, to be leaner and meaner, has closed so many offices that, by some accounts, it can take up to four hours waiting in line to get a driver's license renewal or alteration.
Not wishing to be left out during the recent go-go years of "my standards are bigger, meaner and higher than your standards," ISTE published the National Educational Technology Standards, redundantly referred to as the NETS Standards.
police state are expanded, according to an unnamed character high up in the national security bureaucracy, because "you can't fight a junkyard dog with ASPCA rules, you take your leash off of a bigger, meaner dog."
Chris was every bit as infamous as North, only meaner.
Farrell strikes a fatalistic tone: "For the working stiff and the single mother and seniors on fixed incomes with no health insurance, the rules just got a lot tougher and the world just became a much meaner place."
That's bound to make Mexican newspapers leaner and meaner but more savvy and professional.
The director screamed at me, "Meaner, Meaner!" I ran faster with this angry expression on my face.
Findings such as this certainly don't indicate that European-Americans are meaner people than the Aka."