Your cat is stuck in a tree and you need a ladder to rescue your cat. The cat is 14 feet above the ground and your ladder makes a 60° angle with the tree when it is long enough to reach the cat. How long is
your ladder you used to rescue the cat?

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.