The numbers of miles Ron biked are 31, 35, 49, 32, 45, 29, 33, 28, and 40. Determine the range of this data set.
To determine the range of a data set, you need to subtract the smallest number from the largest number.
In this case, the smallest number is 28 and the largest number is 49.
49 - 28 = 21
Therefore, the range of this data set is 21.