, , , , ,

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

Add and .

Add and .

Add and .

Add and .

Add and .

Factor out of .

Cancel the common factors.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Divide.

Find the Mean (Arithmetic) 86 , 90 , 93 , 85 , 79 , 92