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a turd
Once all of the data are displayed in the stem and leaf diagram it is simply a question of looking at the most frequentlyoccurring value.
Histogram
The major disadvantage of the Stem and Leaf plot is that it is dependant on the choice of intervals. The plot is not unique.
In statistics this is usually termed a stem-leaf plot. To see some I suggest going to image.google.com and querying for stem leaf plot.