Final answer:
The range is the difference between the highest and lowest values in a data set. For the provided data set of spam phone calls, the range is 20.
Step-by-step explanation:
The question is asking for the range of a data set, which represents the difference between the highest and lowest values. To find the range, you identify the largest and smallest numbers in the data set and subtract the smallest from the largest. In the given data set of spam phone calls received over 13 consecutive days (15,7,2,9,22,16,7,11,15,3,12,17), the largest value is 22 and the smallest is 2. The range is therefore 22 - 2 = 20.