In order to find the range of a data set, you need to order the numbers in the set from least to greatest. Ex: 9, 3, 8, 7, 4, 1, 2, 6, 5 = 1, 2, 3, 4, 5, 6, 7, 8, 9 Then you subtract the smallest number in the data set from the largest number. Ex: 9 - 1 = 8. The answer that you get from subtracting is the range of the data set. Hope this helps.
