# Statistics Examples

,

Step 1

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

Step 2

Step 2.1

Factor out of .

Step 2.2

Factor out of .

Step 2.3

Factor out of .

Step 2.4

Cancel the common factors.

Step 2.4.1

Factor out of .

Step 2.4.2

Cancel the common factor.

Step 2.4.3

Rewrite the expression.

Step 2.4.4

Divide by .

Step 3

Add and .