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en.wikipedia.org/wiki/Mean

In mathematics, mean has several different definitions depending on the context. In probability ... The arithmetic mean of a set of numbers x1, x2, ..., xn is typically denoted by x ¯ {\displaystyle {\bar {x}}} {\bar {x}} , pronounced "x bar". If the data ...

www.purplemath.com/modules/meanmode.htm

Explains how to compute the mean, median, mode, and range of a list of numbers.

www.mathsisfun.com/mean.html

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum ...

Here we give you a set of numbers and then ask you to find the mean, median, and mode. It's your first opportunity to practice with us!

www.factmonster.com/math/numbers/mean-and-median

The arithmetic mean, also called the average, of a series of quantities is obtained by finding the sum of the quantities and dividing it by the number of quantities.

wiki.scratch.mit.edu/wiki/Finding_the_Mean_of_Numbers

Jun 23, 2017 ... "Finding the Average of Numbers" redirects here. For other measures of the center of a set, see Finding the Average of Numbers ...

www.wikihow.com/Calculate-the-Mean

How to Calculate the Mean. In mathematics, the "mean" is a kind of average found by dividing the sum of a set of numbers by the count of numbers in the set.

www.algebralab.org/lessons/lesson.aspx?file=algebra_statmeanmedianmode.xml

When you hear someone use the word "average" to describe a set of numbers, be careful. A more accurate phrase to use is measure of central tendency.