Find the Mean 18 , 23 , 10 , 39 , 22 , 17 , 16 , 15

$18$ , $23$ , $10$ , $39$ , $22$ , $17$ , $16$ , $15$

Step 1

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

$\frac{18 + 23 + 10 + 39 + 22 + 17 + 16 + 15}{8}$

Step 2

Simplify the numerator.

Add $18$ and $23$ .

$\frac{41 + 10 + 39 + 22 + 17 + 16 + 15}{8}$

Add $41$ and $10$ .

$\frac{51 + 39 + 22 + 17 + 16 + 15}{8}$

Add $51$ and $39$ .

$\frac{90 + 22 + 17 + 16 + 15}{8}$

Add $90$ and $22$ .

$\frac{112 + 17 + 16 + 15}{8}$

Add $112$ and $17$ .

$\frac{129 + 16 + 15}{8}$

Add $129$ and $16$ .

$\frac{145 + 15}{8}$

Add $145$ and $15$ .

$\frac{160}{8}$

Step 3

Divide $160$ by $8$ .

$20$