A rectangular picture is 12 inches long and 8 inches wide. A uniform border is placed around the outside of the picture, making the total area 165 square inches. Find the width of the border.

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.