Graphs, Charts & Tables
Constructing Stem-and-leaf Diagrams
The aim of this lesson is to be able to make up a stemand-leaf diagram from a list of numbers
The following is a list of computer speeds (in kilobytes/second) of 12 different computer models. Make up a stem-and-leaf diagram from this list.
24, 43, 16, 12, 33, 19, 24, 30, 28, 25, 18, 48 2|4 4|3 1|6 1 6 2 9 8
2
3 4
4 4 8 5
3 0 3 8
Now we put each row into numerical order.
1
2 3
6 2 9 8
4 4 8 5 3 0
1
2 3
2 6 8 9
4 4 5 8 0 3
4
3 8
4
3 8
2 4 = 24 Denotes the meaning of the numbers Total number of numbers
n = 12