Sierra left $6.40 as a tip for a waiter. This was 16% of the bill before the tip. How much was her total bill before the tip?

You didn’t put the necessary image to solve the question : p

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.