Answer :
The dataset 56, 81, 54, 47, 45, 94 is a discrete distribution
The number that must be added to have a range of 55 is 39
How to determine the number?
The range of a dataset is calculated as:
Range = Highest - Least
From the dataset, we have:
Highest = 94
Least = 56
The above combination would not give a range of 55.
Using the range and the highest value, we have:
55 = 94 - Least
Collect like terms
Least = 94 - 55
Evaluate
Least = 39
Hence, the number that must be added to have a range of 55 is 39
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