Students donated 2,500 cans of food to the local food pantry last year. They donated 4,000 cans this year. What is the percent increase in the number of cans donated?

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.