Find the coordinates of the midpoint of a segment with the endpoints (2,8) and (8,0).

If cheese is $4.40 per kilogram, you should pay .88

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.