If you worked 120 hours in the summer and were paid $10 an hour, how much money would you expect to receive?

1,200 dollars
120 multiplied by 10 is 1,200

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.