Example 16

EXAMPLE 16 Stem-and-leaf displays of decimal-valued data

Here follows a sample of the grade point averages of the author's advisees. Construct a stem-and-leaf display of the data.

2.9

3.5

3.7

4.0

2.8

3.9

3.2

4.0

3.5

3.8

Solution

Here, we define the “ones” decimal place to represent the stem, and the “tenths” decimal place to represent the leaves. The resulting stem-and-leaf display is shown in Figure 27. Note that the two “0” leaves next to the “4” stem represent two different students whose GPA is 4.0.

Figure 2.27: FIGURE 27 Stem-and-leaf display of decimal-valued data.