Basic Math Examples

$11$ , $9$ , $7$ , $6$ , $8$ , $2$ , $15$ , $1$ , $12$ , $15$ , $14$

Step 1

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

$\frac{11 + 9 + 7 + 6 + 8 + 2 + 15 + 1 + 12 + 15 + 14}{11}$

Step 2

Simplify the numerator.

Tap for more steps...

Step 2.1

Add $11$ and $9$ .

$\frac{20 + 7 + 6 + 8 + 2 + 15 + 1 + 12 + 15 + 14}{11}$

Step 2.2

Add $20$ and $7$ .

$\frac{27 + 6 + 8 + 2 + 15 + 1 + 12 + 15 + 14}{11}$

Step 2.3

Add $27$ and $6$ .

$\frac{33 + 8 + 2 + 15 + 1 + 12 + 15 + 14}{11}$

Step 2.4

Add $33$ and $8$ .

$\frac{41 + 2 + 15 + 1 + 12 + 15 + 14}{11}$

Step 2.5

Add $41$ and $2$ .

$\frac{43 + 15 + 1 + 12 + 15 + 14}{11}$

Step 2.6

Add $43$ and $15$ .

$\frac{58 + 1 + 12 + 15 + 14}{11}$

Step 2.7

Add $58$ and $1$ .

$\frac{59 + 12 + 15 + 14}{11}$

Step 2.8

Add $59$ and $12$ .

$\frac{71 + 15 + 14}{11}$

Step 2.9

Add $71$ and $15$ .

$\frac{86 + 14}{11}$

Step 2.10

Add $86$ and $14$ .

$\frac{100}{11}$

Step 3

Divide.

$9.\overline{09}$

Step 4

The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.

$9.1$