Find the Mean 10 , 11 , 12 , 10.5 , 11.25 , 12.25 , 10

$10$ , $11$ , $12$ , $10.5$ , $11.25$ , $12.25$ , $10$

Step 1

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

$\frac{10 + 11 + 12 + 10.5 + 11.25 + 12.25 + 10}{7}$

Step 2

Simplify the numerator.

Add $10$ and $11$ .

$\frac{21 + 12 + 10.5 + 11.25 + 12.25 + 10}{7}$

Add $21$ and $12$ .

$\frac{33 + 10.5 + 11.25 + 12.25 + 10}{7}$

Add $33$ and $10.5$ .

$\frac{43.5 + 11.25 + 12.25 + 10}{7}$

Add $43.5$ and $11.25$ .

$\frac{54.75 + 12.25 + 10}{7}$

Add $54.75$ and $12.25$ .

$\frac{67 + 10}{7}$

Add $67$ and $10$ .

$\frac{77}{7}$

Step 3

Divide $77$ by $7$ .

$11$

Step 4

Divide.

$11$