Determine the solution for x² – 3x - 2820
o -7, 4]
o [-4, 7]
o (-00,-4] or [7,00)
(00,-7] or [4,co]

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.

Ithink if ur looking for a ratio it would be 12: 3