It is 24, the difference between the lowest and highest numbers, 73 and 97.
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the mean is 79.75
24. It is the difference between 97 and 73, the highest and lowest numbers in the set.
Example:Problem:Cheryl took 7 math tests in one marking period. What is the range of her test scores?89, 73, 84, 91, 87, 77, 94Solution:Ordering the test scores from least to greatest, we get:73, 77, 84, 87, 89, 91, 94highest - lowest = 94 - 73 = 21-The range of these test scores is 21 points.so:find the range for each list of scores80,79,85,75,84,76,88,8075,76,79,80,80,84,85,88highest - lowest = range88 - 75 = 13hope this helps :)http://www.mathgoodies.com/lessons/vol8/range.html
80%
88.2 is the average.