The range of a set of numbers is calculated by finding the difference between the largest and smallest numbers in the set. In the given set of numbers: 7, 7, 8, 4, 9, 8, 6, 9, we first identify the smallest and largest numbers.
The smallest number in this set is 4, and the largest number is 9. We find the range by subtracting the smallest number from the largest:
Range = Largest Number – Smallest Number
Range = 9 – 4 = 5
Therefore, the range of the set of numbers is 5.