A mean is an average, to find it add up all the numbers in a data set and divide by the amount.
Example: 2,5,7,8 are the numbers in the set
2+5+7+8 add them all
22 divide by the amount of numbers
22 ÷4 solve
The mean would be 5.5 or [tex]5 \frac{1}{2} [/tex]
