Here are boxplots for the number of calories in 20 brands of beef hot dogs, 17 brands of meat hot dogs, and 17 brands of poultry hot dogs.
a.
boxplots make it easy to compare several distributions, as in this example.
b.
boxplots show more detail about the shape of the distribution.
c.
boxplots use the five number summary, whereas stemplots and histograms use the mean and standard deviation.
d.
boxplots show skewed distributions, whereas stemplots and histograms show only symmetric distributions