Two data sets of 15 integers each are summarized. For each of the data sets, the first interval represents the frequency of integers greater than or equal to 5, but less than 10. The second interval represents the frequency of integers greater than or equal to 10, but less than 15, and so on.
Data Set X: 5 integers in [5, 10), 7 integers in [10, 15), 3 integers in [15, 20).
Data Set Y: 5 integers in [0, 5), 7 integers in [5, 10), 3 integers in [10, 15).
What is the smallest possible difference between the mean of Data Set X and the mean of Data Set Y?
0
1
5
15
