How to solve this problem f + 3pi equals 12 pi

F + 3pi = 12pi

F = 12pi - 3pi

F = 9pi

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.