Please indicate what functions you use to construct the stem-and-leaf diagram

6. A table show a test grade from last semester, construct a stem-and-leaf diagram for the grade data and comment on any important features that you notice. (10 points) Table: student's grades from last semester 32 58 70.5 72 91 48 45.5 73 87.5 45.5 61.5 93.5 34 31 52.5 39 36 89.5 54.5 29 68.5 5 59 47.5 92 38.5 40 49.5 38 71.5 52.5 89 98 82 30 36.5 40 34 61.5 37 72.5 77.5 68 40 86.5 22 65 16.5 36.5 36 84.5 63.5