Arithmetic mean: Difference between revisions
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imported>Doug Williamson (Align presentation of formula with qualification material) |
imported>Doug Williamson (Remove main text reference to expected value.) |
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The arithmetic mean of a set of data is the simple average calculated by adding up all of the values and dividing by the total number of items. | The arithmetic mean of a set of data is the simple average calculated by adding up all of the values and dividing by the total number of items. | ||
For example, the arithmetic mean of 4%, 5% and 6% is | For example, the arithmetic mean of 4%, 5% and 6% is: | ||
= ( 4% + 5% + 6% ) / 3 | = ( 4% + 5% + 6% ) / 3 | ||
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Also sometimes known as the Mean | Also sometimes known more simply as the Mean. | ||
Sometimes denoted by 'µ' - the Greek letter ''mu'' (or m). | Sometimes denoted by 'µ' - the Greek letter ''mu'' (or m). | ||
Revision as of 10:32, 29 March 2015
Maths.
The arithmetic mean of a set of data is the simple average calculated by adding up all of the values and dividing by the total number of items.
For example, the arithmetic mean of 4%, 5% and 6% is:
= ( 4% + 5% + 6% ) / 3
= 5%.
Also sometimes known more simply as the Mean.
Sometimes denoted by 'µ' - the Greek letter mu (or m).
