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133 bytes added ,  13:31, May 11, 2007
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==Example of calculation==  
 
==Example of calculation==  
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  The average of 3, 5, and 7 is <math>15 \div 3=5</math>.
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  To calculate the average of 3, 5, and 7:
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The total of the data is ,math> 3 + 5 + 7 = 15 </math>
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There are 3 items in the data set.
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So the '''average''' is <math>15 \div 3=5</math>.
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