Estevan walks to school he usually stays on the sidewalk but today he cut through the park how much shorter did he walk today than usual round to the nearest foot

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.