Basic Math Examples

7.6

$7.6$ ,

8.2

$8.2$ ,

8.2

$8.2$ ,

9.6

$9.6$ ,

5.7

$5.7$ ,

9.1

$9.1$

Step 1

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

\frac{7.6 + 8.2 + 8.2 + 9.6 + 5.7 + 9.1}{6}

$\frac{7.6 + 8.2 + 8.2 + 9.6 + 5.7 + 9.1}{6}$

Step 2

Simplify the numerator.

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Step 2.1

Add

7.6

$7.6$ and

8.2

$8.2$ .

\frac{15.8 + 8.2 + 9.6 + 5.7 + 9.1}{6}

$\frac{15.8 + 8.2 + 9.6 + 5.7 + 9.1}{6}$

Step 2.2

Add

15.8

$15.8$ and

8.2

$8.2$ .

\frac{24 + 9.6 + 5.7 + 9.1}{6}

$\frac{24 + 9.6 + 5.7 + 9.1}{6}$

Step 2.3

Add

24

$24$ and

9.6

$9.6$ .

\frac{33.6 + 5.7 + 9.1}{6}

$\frac{33.6 + 5.7 + 9.1}{6}$

Step 2.4

Add

33.6

$33.6$ and

5.7

$5.7$ .

\frac{39.3 + 9.1}{6}

$\frac{39.3 + 9.1}{6}$

Step 2.5

Add

39.3

$39.3$ and

9.1

$9.1$ .

\frac{48.4}{6}

$\frac{48.4}{6}$

\frac{48.4}{6}

$\frac{48.4}{6}$

Step 3

Divide

48.4

$48.4$ by

6

$6$ .

8.0 ¯ 6

$8.0\overline{6}$

Step 4

Divide.

8.0 ¯ 6

$8.0\overline{6}$

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.

8.07

$8.07$