mean(1,2,3,4,5,6,7,8,9,10)

$mean(1,2,3,4,5,6,7,8,9,10)$

Evaluate

\frac{11}{2}=5.5

$211 =5.5$

Factor

\frac{11}{2} = 5\frac{1}{2} = 5.5

$211 =521 =5.5$

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1+2+3+4+5+6+7+8+9+10=55

To find the mean of the set 1,2,3,4,5,6,7,8,9,10 first add the members together.

\frac{55}{10}=\frac{11}{2}

The mean (average) of the set 1,2,3,4,5,6,7,8,9,10 is found by dividing the sum of its members by the number of the members, in this case 10.