3. Suppose you spend 2 hours between Monday and Saturday studying for your 5-credit- hour chemistry course. To meet the college rule of thumb, how many hours do you
need to study on Sunday? Is it possible? Is it effective?

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.