(-9, 19), (10, 16)
Find the slope of the line through each pair of points

The answer of this question is 672 .

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.