Shania gets $40 per day as wages and $4.50 as commission for every pair of shoes he sells in a day. his daily earnings goal is $112.

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.