The ratio of pencils to pens in the drawer is 12:32. If there are actually twice as many pencils as in the ratio, how many pencils and pens are there in the drawer? A:24 pens, 64 pencils
B: 12 pencils, 32 pens
C: 24 pencils, 64 pens
D: 12 pens, 32 pencils

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.