A recipe for salad dressing uses 60mL of vinegar for 240mL of oil. Emily has 40mL of vinegar, how much should she use? Show your work.

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.