Three cans of tuna costs $1.50. what is the cost of one can of tuna

The cost of one can of tuna is $1.50/3, or $0.50 per can.

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.