Basic Math Examples

$11$ ,

$12$ ,

$13$ ,

$14$ ,

$15$ ,

$16$ ,

$17$ ,

$18$ ,

$22$ ,

$32$

Step 1

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

$\frac{11 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 22 + 32}{11}$

Step 2

Simplify the numerator.

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Step 2.1

Add

$11$ and

$11$ .

$\frac{22 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 22 + 32}{11}$

Step 2.2

Add

$22$ and

$12$ .

$\frac{34 + 13 + 14 + 15 + 16 + 17 + 18 + 22 + 32}{11}$

Step 2.3

Add

$34$ and

$13$ .

$\frac{47 + 14 + 15 + 16 + 17 + 18 + 22 + 32}{11}$

Step 2.4

Add

$47$ and

$14$ .

$\frac{61 + 15 + 16 + 17 + 18 + 22 + 32}{11}$

Step 2.5

Add

$61$ and

$15$ .

$\frac{76 + 16 + 17 + 18 + 22 + 32}{11}$

Step 2.6

Add

$76$ and

$16$ .

$\frac{92 + 17 + 18 + 22 + 32}{11}$

Step 2.7

Add

$92$ and

$17$ .

$\frac{109 + 18 + 22 + 32}{11}$

Step 2.8

Add

$109$ and

$18$ .

$\frac{127 + 22 + 32}{11}$

Step 2.9

Add

$127$ and

$22$ .

$\frac{149 + 32}{11}$

Step 2.10

Add

$149$ and

$32$ .

$\frac{181}{11}$

Step 3

Divide.

$16.\overline{45}$

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.

$16.5$