I.Stem-and-leaf plots
A. Stem is the first or more digits
B. Leaves show the ones digits
II.Histograms
A. Histograms show frequency in data bars for a range of intervals.
B. They are similar to bar graphs but there is no space between the bars.
Check out this link from Purplemath for a more in depth explaination of stem-and-leaf plots.
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