http://www.eduplace.com/math/mhm/5/06a/index.html
Stem and leaf plots are a method for showing the frequency with which certain classes of values occur. It summarizes the shape of a set of data (the distribution) and provides extra detail regarding individual values. The data is arranged by place value. The digits in the largest place are referred to as the stem while the digits in the smallest place are known as the leaf. They are great organizers for large amounts of information. The stem and leaf plot above gives an example of the ages of people at a family reunion. For example, the ages are 1, 8, 9, 32, 34, 37, 45, 51, 55, and 81.
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