Evaluate the expression when x = -2 and y = 3.

-8x + y

a. 19
b. 22
c. -7
d. -13

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.