The range of a data set is the difference between the largest and smallest number in that set
Ordering the numbers makes it easier to find the largest and smallest number
Mark off each number as you put them in order to make sure you don't miss anything!
25.2 is the smallest number
48.2 is the largest number
To find the range, subtract 25.2 from 48.2
48.2 minus 25.2 is 23, which is our range!