The range of these numbers is equal to 88 - 79 = 9.
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69, 78, 79, 88, 88, 88, 92, 93, 95, 98, 100 The mean is 88. The mode is 88. The range is 31.
60 + 75 + 88 + 93 = 316 316/4 = 79 The average of the four numbers is 79.
79-88 = -9
Range = 89 - 78 = 11
When the data is arranged in ascending order, the middle numbers are 88 and 90. Take the mean of these, which is 89, as the median.