Put numbers in order -2,-2,0,1,2,4,7,8,9,12 Mean add all the numbers = 39 divide 39 by the number of of numbers on the list which is 10. 39/10 = 3.9 Mean = 3.9 Range is the number of spots between -2 and 12 = 14 Range =14 Median is the middle number in the list there are two middle numbers 2 and 4. Add these together to get 6. Divide 6 by the number 2 because that is how many numbers you had to add. 6/2=3. The is not on the list but it is the average of the two terms. Median =3
