http://mainland.cctt.org/mathsummer/josephbond/stemandplots/stem-and-leaf_std.htm
Stem and Leaf plot show the amount or frequency for different values of data. For example, the graph above shows that the three hundreds had the biggest range of data. The stem is the first number and the leaf is the second half. You combine the two for the final number. If the stem is 3 and the leaf is 10 it is 310.
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