Arithmetic mean: Difference between revisions
From ACT Wiki
Jump to navigationJump to search
imported>Doug Williamson m (Added more space so that calculations are clearer) |
imported>Doug Williamson (Align presentation of formula with qualification material) |
||
| Line 5: | Line 5: | ||
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 | ||
= 5%. | = 5%. | ||
Revision as of 15:20, 14 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 as the Mean or the Expected value E[X].
Sometimes denoted by 'µ' - the Greek letter mu (or m).
