Editing Coefficient of variation (section)

== Examples ==
In the examples below, we will take the values given as '''randomly chosen from a larger population of values'''.

* The data set [100, 100, 100] has constant values.  Its [[standard deviation]] is 0 and average is 100, giving the coefficient of variation as 0 / 100 = 0
* The data set [90, 100, 110] has more variability.  Its standard deviation is 10 and its average is 100, giving the coefficient of variation as 10 / 100 = 0.1
* The data set [1, 5, 6, 8, 10, 40, 65, 88] has still more variability. Its standard deviation is 32.9 and its average is 27.9, giving a coefficient of variation of 32.9 / 27.9 = 1.18

In these examples, we will take the values given as '''the entire population of values'''.

* The data set [100, 100, 100] has a [[population standard deviation]] of 0 and a coefficient of variation of 0 / 100 = 0
* The data set [90, 100, 110] has a population standard deviation of 8.16 and a coefficient of variation of 8.16 / 100 = 0.0816
* The data set [1, 5, 6, 8, 10, 40, 65, 88] has a population standard deviation of 30.8 and a coefficient of variation of 30.8 / 27.9 = 1.10