Stem-and-Leaf Plot
Another type of graph is the stem-and-leaf plot. It is closely related to the line plot except that the number line is usually vertical, and digits are used instead of x's.
For example: Here are the test scores of 26 4th. graders:
64, 82, 85, 99, 96, 81, 97, 80, 81, 80, 84, 87, 98, 75, 86, 88, 82, 78, 81, 86, 80, 50, 84, 88, 83, 82
Your first step should be to place the numbers in order from least to greatest.
50, 64, 75, 78, 80, 80, 80, 81, 81, 81, 82, 82, 82, 83, 84, 84, 85 86, 86, 87, 88, 88, 96, 97, 98, 99
Now create your graph:
The numbers on the left side of the vertical line are the stems. The numbers on the right side are the leaves. In our graph, the stems are the tens digits of the scores on the test, and the leaves are the unit digits. In this case, 9/6 represents a score of 96.
To make an ordered stem-and-leaf plot, we arrange the leaves on their given rows from least to greatest, starting from the left.
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Last update: December 10, 1995.