he stem-and-leaf plot displays the amount of time, in minutes, that 10 students spent practicing their musical instrument one day. 1 5 2 0, 2, 5 3 2, 4 4 5 5 3, 6 6 0 Key: 2|0 means 20 Part A: Calculate the mean and median for the data given. (2 points) Part B: A student would like to show their teacher that they have practiced long enough for the day. Which measure of center should the student give to their teacher? Explain your answer. (2 points)