Basic Math Examples

16

$16$ ,

20 - 11

$20 - 11$ ,

88

$88$

Step 1

Subtract

11

$11$ from

20

$20$ .

16, 9, 88

$16, 9, 88$

Step 2

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

\frac{16 + 9 + 88}{3}

$\frac{16 + 9 + 88}{3}$

Step 3

Simplify the numerator.

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Step 3.1

Add

16

$16$ and

9

$9$ .

\frac{25 + 88}{3}

$\frac{25 + 88}{3}$

Step 3.2

Add

25

$25$ and

88

$88$ .

\frac{113}{3}

$\frac{113}{3}$

\frac{113}{3}

$\frac{113}{3}$

Step 4

Divide.

37. ¯ 6

$37.\overline{6}$

Step 5

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.

37.7

$37.7$