The following table shows the number of hours some high school students in 2 cities spend searching the Internet each week:

City A 35 36 35 34 35 38 36 36 38
City B 22 20 50 25 24 65 25 26 24
Part A: Create a five-number summary and calculate the interquartile range for the two sets of data. (6 points)

Part B: What is the best measure of center? Justify your answer. (4 points) (10 points)