Basic Math Examples

$84.89$ , $85.71$ , $85.07$ , $84.32$ , $84.48$ , $84.79$ , $84.36$ , $85.98$ , $85.25$

Step 1

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

$\frac{84.89 + 85.71 + 85.07 + 84.32 + 84.48 + 84.79 + 84.36 + 85.98 + 85.25}{9}$

Step 2

Simplify the numerator.

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Step 2.1

Add $84.89$ and $85.71$ .

$\frac{170.6 + 85.07 + 84.32 + 84.48 + 84.79 + 84.36 + 85.98 + 85.25}{9}$

Step 2.2

Add $170.6$ and $85.07$ .

$\frac{255.67 + 84.32 + 84.48 + 84.79 + 84.36 + 85.98 + 85.25}{9}$

Step 2.3

Add $255.67$ and $84.32$ .

$\frac{339.99 + 84.48 + 84.79 + 84.36 + 85.98 + 85.25}{9}$

Step 2.4

Add $339.99$ and $84.48$ .

$\frac{424.47 + 84.79 + 84.36 + 85.98 + 85.25}{9}$

Step 2.5

Add $424.47$ and $84.79$ .

$\frac{509.26 + 84.36 + 85.98 + 85.25}{9}$

Step 2.6

Add $509.26$ and $84.36$ .

$\frac{593.62 + 85.98 + 85.25}{9}$

Step 2.7

Add $593.62$ and $85.98$ .

$\frac{679.6 + 85.25}{9}$

Step 2.8

Add $679.6$ and $85.25$ .

$\frac{764.85}{9}$

Step 3

Divide $764.85$ by $9$ .

$84.98\overline{3}$

Step 4

Divide.

$84.98\overline{3}$

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.

$84.983$