Five dental students score 64, 56, 48, 66, and 66 on an exam. What are the median and mean, respectively?

Sorted scores: 48, 56, 64, 66, 66. With 5 values, the median is the middle (3rd) value = 64. Mean = (48+56+64+66+66)/5 = 300/5 = 60. So median = 64 and mean = 60 — the two repeated high scores (66, 66) pull the median up while the lower outlier (48) pulls the mean down slightly more, in this particular small dataset.