6. Given the functions h(x) = kx +3 and j(x) = [x],
which value of x makes h(x) = j(x)?
A. -2
B. 2
C. 3
D. -6

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.