A stem-and-leaf plot is a type of way to display quantitative variables by creating a stem (the first digit of the number) and a leaf (usually the last digit of the number). Each stem is then placed on the left side (and in between numbers as well even if they dont have leaves) of a table and the corresponding leaf is placed on the right side, these leaves can then optionally be sorted.
Consider the following data:
80, 85, 75, 90, 62, 50, 55, 65, 75, 82, 70, 25, 92, 57, 63, 72, 81, 95, 31, 69
The stem-and-leaf plot is as follows
| Stem | Leaf |
|---|---|
| 2 | 5 |
| 3 | |
| 4 | 1 |
| 5 | 0 5 7 |
| 6 | 2 3 5 9 |
| 7 | 0 2 5 5 |
| 8 | 0 1 2 5 |
| 9 | 0 2 5 |