Basic Math Examples

$65$ ,

$67$ ,

$68$ ,

$70$ ,

$72$ ,

$75$ ,

$76$

Step 1

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

$\frac{65 + 67 + 68 + 70 + 72 + 75 + 76}{7}$

Step 2

Simplify the numerator.

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Step 2.1

Add

$65$ and

$67$ .

$\frac{132 + 68 + 70 + 72 + 75 + 76}{7}$

Step 2.2

Add

$132$ and

$68$ .

$\frac{200 + 70 + 72 + 75 + 76}{7}$

Step 2.3

Add

$200$ and

$70$ .

$\frac{270 + 72 + 75 + 76}{7}$

Step 2.4

Add

$270$ and

$72$ .

$\frac{342 + 75 + 76}{7}$

Step 2.5

Add

$342$ and

$75$ .

$\frac{417 + 76}{7}$

Step 2.6

Add

$417$ and

$76$ .

$\frac{493}{7}$

Step 3

Divide.

$70.42857142$

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.

$70.4$