Changes

The '''mean''' is a term in statistics.  The mean is the average value in a set of measurements. The mean is the sum of a set of numbers divided by how many numbers are in the set.

The '''mean''' is a term in [[statistics]].  The mean is the [[average]] value in a set of measurements. The mean is the sum of a set of numbers divided by how many numbers are in the set.

The mean of a group of numbers is one way to express their [[average]].  To find the mean, the numbers are added and divided by the quantity of numbers in the group.  For example: to find the mean of 3, 4, 6, and 7, we add them together: <math>3 + 4 + 6 + 7 = 20</math>.  Then we divide them by the quantity of numbers in the group, which is 4.  <math>20/4 = 5</math>.

The mean of a group of numbers is one way to express their average.  To find the mean, the numbers are added and divided by the [[quantity]] of numbers in the group.  For example: to find the mean of 3, 4, 6, and 7, we add them together: <math>3 + 4 + 6 + 7 = 20</math>.  Then we divide them by the quantity of numbers in the group, which is 4.  <math>20/4 = 5</math>.

Most spreadsheet programs and computer languages consider ''average'' to be the mean, but there are three common types of [[average]]. Often the [[median]] is far from the [[mean]], when values are skewed in one direction.

Most [[spreadsheet]] programs and [[computer language]]s consider ''average'' to be the mean, but there are three common types of [[average]]. Often the [[median]] is far from the [[mean]], when values are skewed in one direction.

==See Also==

==See Also==

*[[Mode]]

*[[Mode]]

[[category:Probability and Statistics]]

[[category:Statistics]]