Final answer:
The range of the sample data set 811, 783 is 28 (Option B).
Step-by-step explanation:
The range of a data set is the difference between the largest and smallest values in the set. In this case, the largest value is 811 and the smallest value is 783. Therefore, the range is calculated as:
Range = Largest value - Smallest value
Range = 811 - 783
Range = 28
So, the range of the sample data set 811, 783 is 28 (Option B).