Answer:
the range of the given data set is 5/8
Explanation:
Range is the difference between the largest value in a number set minus the smallest value in a number set. 
In this case, the largest value is 1 1/4 and the smallest is 5/8
We simply just subtract those 2 numbers to find the range. 
- 1 1/4 - 5/8
 - Find the common denominator 
 - 1 2/8 - 5/8 
 - Make the first fraction an improper fraction 
 - 10/8 - 5/8 
 - 5/8