Final answer:
The best measure of center for this data set would be the median, which is 57.
Step-by-step explanation:
The best measure of center for this data set would be the median. The median is the value that separates the data into two equal halves. To find the median, we arrange the data in ascending order: 52, 53, 56, 56, 57, 57, 57, 59, 59, 60, 61, 61, 61, 62, 64. Since there are 15 values, the median is the 8th value in the sorted list, which is 57.