Respuesta :

 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]

The word “and” is used for addition in math
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