Stem and leaf plots are somewhat similar to histograms: they illustrate the frequency of occurance of data in a range. However, stem and leaf plots show the exact numerics for the range, and would be like a "histogram-on-it's side". They can be used to see a distribution pattern in the data.
The "stem" is the first digit (or "tens" digit in this case) of the number, and the leaf is the last digit (or the "ones" digit in this case). The ages for this group are 1,8,9,32,34,37,45,51,55,and 81.
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