Basic Math Examples

$3$ , $0.75 + 5.5 + 7.5$

Step 1

Add $0.75$ and $5.5$ .

$3, 6.25 + 7.5$

Step 2

Add $6.25$ and $7.5$ .

$3, 13.75$

Step 3

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

$\frac{3 + 13.75}{2}$

Step 4

Add $3$ and $13.75$ .

$\frac{16.75}{2}$

Step 5

Divide $16.75$ by $2$ .

$8.375$

Step 6

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.

$8.4$