Stem-and-leaf plot
"Leading numbers" are shown in the "stem" (the column on the left-hand side), and "trailing numbers" are shown in the "leaves" (the lists on the right-hand side). In this example, the first row represents the numbers 1, 1, 2, 2, etc.; the second row represents the numbers 10, 10, 10, 11, 11, 13, etc.; and so on.
Source
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"stem_leaf_plant_img_1.jpg."
http://www.softschools.com/math/topics/stem_and_leaf_plot/
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