The stem-and-leaf plot displays the amount of time, in minutes, that a student spent reading their favorite book over 10 days.


1 8
2 1, 5, 8
3 0, 5
4 8
5 2, 5
6 5
Key: 3|0 means 30


Part A: Calculate the mean and median for the data given.

Part B: A student would like to show their teacher that they have spent more time reading for the day. Which measure of center should the student give to their teacher? Explain your answer.