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Difference between revisions of "Arithmetic mean"

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The number <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a013/a013330/a0133301.png" /> obtained by dividing the sum of several numbers <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a013/a013330/a0133302.png" /> by their number <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a013/a013330/a0133303.png" />:
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The number $a$ obtained by dividing the sum of several numbers $a_1,\ldots,a_n$ by their number $n$:
  
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<table class="eq" style="width:100%;"> <tr><td valign="top" style="width:94%;text-align:center;"><img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a013/a013330/a0133304.png" /></td> </tr></table>
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$$a=\frac{a_1+\ldots+a_n}{n}.$$

Revision as of 13:04, 9 April 2014

The number $a$ obtained by dividing the sum of several numbers $a_1,\ldots,a_n$ by their number $n$:

$$a=\frac{a_1+\ldots+a_n}{n}.$$

How to Cite This Entry:
Arithmetic mean. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Arithmetic_mean&oldid=31433
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