A group of campers is going to occupy 3 campsites at a campground. There are 16 campsites from which to choose. In how many ways can the campsites be chosen?

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.