source: http://mainland.cctt.org/mathsummer/JosephBond/StemAndPlots/stem-and-leaf_std.htm
Stem-and-leaf plots are used in analyzing the distribution of quantitative data in graphical form. Generally, these graphs feature two columns; one containing the "stems" the other containing the "leaves". This tool is useful in allowing the reader to quickly visualize statistical values in an orderly, easy-to-read fashion.
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