Let a and b be real numbers where a + b 0. Which of the following functions could represent the graph below? Of(x) = x(x - a)2(x – 634
f(x) = x(x – a) (x – 6)2
f(x) = xAx- a) (x – b)2
f(x) = x2(x - 2151x_ b)

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.