EXAMPLE 7 Stemplot of Midterm Exam Scores
The midterm exam scores of a class of 20 students are given below.
| 41 | 87 | 88 | 90 | 68 | 92 | 93 | 40 | 91 | 96 |
| 76 | 85 | 88 | 86 | 82 | 69 | 72 | 79 | 80 | 79 |
Since the exam scores range from 44 to 96, the stems are 4, 5, 6, 7, 8, and 9 (Step 1). Figure 5.10 shows how to complete Steps 2 and 3. Notice that the stem of 5 is included in the plot even though there are no data values in the 50s.
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Figure 5.10: Figure 5.10 Constructing a stemplot.