Find the mean absolute deviation of the set of data

Question

2,3,5,7,9

Answer 1

mean = sum divided by number of numbers

= (2+3+5+7+9)/5 = 26/5 = 5.2 = arithmetic average

2-5.2 = -3.2

3-5.2 = -2.2

5-5.2 = -.2

7-5.2 = 1.8

9 -5.2 = 3.8

absolute values of the differences means ignore the negative sign, make them all + before summing them

sum = 12.2

divide by 5

12.2/5 = 2.44 = mean absolute deviation