If stephen borrows $8400 for 3 years at a simple interest rate of 7% per year, how much interest will he have to pay for this loan for the 3 years ?

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.