Statistical Flower Power—the Stem and Leaf Display
The stem and leaf display is another graphical technique you can use to display your data. A statistician named John Tukey originated the idea during the 1970s. The major benefit of this approach is that all the original data points are visible on the display.
To demonstrate this method, I will use my son Brian’s golf scores for his last 24 rounds, shown in the following table. Normally, Brian would only report his better scores, but we statisticians must be unbiased and accurate.
Figure 3.7 shows the stem and leaf display for these scores.
Stem and leaf display.