Basic Math Examples

$5$ , $10$ , $5$ , $9$ , $7$ , $5$ , $7$

Step 1

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

$\frac{5 + 10 + 5 + 9 + 7 + 5 + 7}{7}$

Step 2

Simplify the numerator.

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Step 2.1

Add $5$ and $10$ .

$\frac{15 + 5 + 9 + 7 + 5 + 7}{7}$

Step 2.2

Add $15$ and $5$ .

$\frac{20 + 9 + 7 + 5 + 7}{7}$

Step 2.3

Add $20$ and $9$ .

$\frac{29 + 7 + 5 + 7}{7}$

Step 2.4

Add $29$ and $7$ .

$\frac{36 + 5 + 7}{7}$

Step 2.5

Add $36$ and $5$ .

$\frac{41 + 7}{7}$

Step 2.6

Add $41$ and $7$ .

$\frac{48}{7}$

Step 3

Divide.

$6.\overline{857142}$

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.

$6.9$