Answer: Range of the data set would be 40.
Step-by-step explanation:
Since we have given the data set as follows:
21,23,28,28,52,54,56,56,57,60,61,61.
We need to find the range of the data set.
As we know the formula for "Range":
Range = Highest number - Lowest number
Range = 61-21
Range = 40
Hence, range of the data set would be 40.