Answer:
13
Explanation:
Arrange the numbers in order from least to greatest
82,79,72,72,81,77,69
Least to greatest:
69, 72, 72, 77, 79, 81, 82
Now, subtract the least number from the greatest number
greatest-least
The greatest is 82, and the least is 69
82-69
13
So, the range is 13