Find the Mean 12 , 9 , 17 , 15 , 10

$12$ , $9$ , $17$ , $15$ , $10$

The mean of a set of numbers is the sum divided by the number of terms.

$\frac{12 + 9 + 17 + 15 + 10}{5}$

Simplify the numerator.

Add $12$ and $9$ .

$\frac{21 + 17 + 15 + 10}{5}$

Add $21$ and $17$ .

$\frac{38 + 15 + 10}{5}$

Add $38$ and $15$ .

$\frac{53 + 10}{5}$

Add $53$ and $10$ .

$\frac{63}{5}$

Divide.

$12.6$