4 Carlos has
1
of a tank of fuel in his car. He uses of a tank per day.
10
How many days will his fuel last?
days

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.