Pam owns an electronics store with storage capacity for 100 computer tablets. She currently has 70 computer tablets in inventory and determines that they are selling at a daily rate equal to 15% of the available capacity. When will Pam sell out of computer tablets

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.