The range of the data set is 77 .
What is Range ?
The range is the difference between the largest and smallest numbers.
The mid range is the average of the largest and smallest number.
In the given data set
the highest number is 89
the smallest number is 12
Range = Highest number - Smallest number
Range = 89-12
Range = 77
Therefore , The range of the data set is 77 .
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