Find the Mean 18 , 17 , 12 , 14 , 8 , 21 , 10 , 11 , 19 , 20 , 10 , 5 , 17 , 12 , 10 , 20

$18$ , $17$ , $12$ , $14$ , $8$ , $21$ , $10$ , $11$ , $19$ , $20$ , $10$ , $5$ , $17$ , $12$ , $10$ , $20$

Step 1

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

$\frac{18 + 17 + 12 + 14 + 8 + 21 + 10 + 11 + 19 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Step 2

Simplify the numerator.

Add $18$ and $17$ .

$\frac{35 + 12 + 14 + 8 + 21 + 10 + 11 + 19 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $35$ and $12$ .

$\frac{47 + 14 + 8 + 21 + 10 + 11 + 19 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $47$ and $14$ .

$\frac{61 + 8 + 21 + 10 + 11 + 19 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $61$ and $8$ .

$\frac{69 + 21 + 10 + 11 + 19 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $69$ and $21$ .

$\frac{90 + 10 + 11 + 19 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $90$ and $10$ .

$\frac{100 + 11 + 19 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $100$ and $11$ .

$\frac{111 + 19 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $111$ and $19$ .

$\frac{130 + 20 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $130$ and $20$ .

$\frac{150 + 10 + 5 + 17 + 12 + 10 + 20}{16}$

Add $150$ and $10$ .

$\frac{160 + 5 + 17 + 12 + 10 + 20}{16}$

Add $160$ and $5$ .

$\frac{165 + 17 + 12 + 10 + 20}{16}$

Add $165$ and $17$ .

$\frac{182 + 12 + 10 + 20}{16}$

Add $182$ and $12$ .

$\frac{194 + 10 + 20}{16}$

Add $194$ and $10$ .

$\frac{204 + 20}{16}$

Add $204$ and $20$ .

$\frac{224}{16}$

Step 3

Divide $224$ by $16$ .

$14$