| A stem and leaf plot is
a process improvement tool. It is similar
to a histogram, but uses the least significant
figures in the data values to construct
the bars. The advantage of the stem and
leaf plot is that it retains data that would
be lost in a bar chart.
The dataset:
1.0, 1.1, 1.5. 1.7, 1.9,
2.4, 2.5, 2.5, 2.5, 2.6, 2.8, 2.9, 3.0,
3.3, 3.5, 3.8
can be represented by:
| Stem |
Leaves |
| 1 |
0 |
1 |
5 |
7 |
9 |
|
|
| 2 |
4 |
5 |
5 |
5 |
6 |
8 |
9 |
| 3 |
0 |
3 |
5 |
8 |
|
|
|
The values in the bars (leaves) are the
decimal portion of the data values.
The scheme can be modified to suit the
spread of the data values. For example,
the stem could be increased in increments
of 0.5, rather than integers.
Follow the links for more Process
Improvement Tools and Team
Tools.
|
