Basic Math Examples

$68$ , $69$ , $65$ , $79$

Step 1

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

$\frac{68 + 69 + 65 + 79}{4}$

Step 2

Simplify the numerator.

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Step 2.1

Add $68$ and $69$ .

$\frac{137 + 65 + 79}{4}$

Step 2.2

Add $137$ and $65$ .

$\frac{202 + 79}{4}$

Step 2.3

Add $202$ and $79$ .

$\frac{281}{4}$

Step 3

Divide.

$70.25$

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.

$70.3$