Find the Mean 97 , 86 , 75 , 64

$97$ , $86$ , $75$ , $64$

Step 1

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

$\frac{97 + 86 + 75 + 64}{4}$

Step 2

Simplify the numerator.

Add $97$ and $86$ .

$\frac{183 + 75 + 64}{4}$

Add $183$ and $75$ .

$\frac{258 + 64}{4}$

Add $258$ and $64$ .

$\frac{322}{4}$

Step 3

Cancel the common factor of $322$ and $4$ .

Factor $2$ out of $322$ .

$\frac{2 (161)}{4}$

Cancel the common factors.

Factor $2$ out of $4$ .

$\frac{2 \cdot 161}{2 \cdot 2}$

Cancel the common factor.

$\frac{2 \cdot 161}{2 \cdot 2}$

Rewrite the expression.

$\frac{161}{2}$

Step 4

Divide.

$80.5$