View source for Arithmetic Mean

{{Autostub}}
{{Initial Proof Needed}}
'''Arithmetic Mean'''
 

<BR/>One of several accepted measures of central tendency, physically
analogous to ''center of gravity''. Pertaining to a set of numbers
x <sub>1</sub>, x<sub>2</sub>,...x<sub>n</sub>, the arithmetic mean,
usually denoted by the symbol [[image:xbar.gif|"mean symbol"]], is the sum x<sub>1</sub>+x<sub>2</sub>+...+x<sub>n</sub> divided by n. Also called ''  mean,
average, simple average ''. 

<BR>''Since the word ''mean'' is also
applied to other measures of central tendency, such as weighted
means, geometric means, harmonic means, the adjective ''arithmetic'' 
is used for clarity. However, when used without further qualification,
the term ''mean'' is understood as ''arithmetic mean.

==References==
''This article is based on NASA's [[NASA SP-7|Dictionary of Technical Terms for Aerospace Use]]''
[[Category%3ADefinitions]]
[[Category%3ANASA SP-7]]
[[Category%3ADefinitions with Missing Images]]