Two data sets of 23 integers each are summarized in the histograms shown. For each of the histograms, the first interval represents the frequency of integers greater than or equal to 10, but less than 15. The second interval represents the frequency of integers greater than or equal to 15, but less than 20, and so on.
Data Set A has 3 integers in the interval [20, 25), 4 in [25, 30), 7 in [30, 35), and 9 in [35, 40).
Data Set B has 3 integers in the interval [10, 15), 4 in [15, 20), 7 in [20, 25), and 9 in [25, 30).
What is the smallest possible difference between the mean of data set A and the mean of data set B?
1
5
6
10
