Solve for r.

r16≥8

r≥2

r≤2

r≥128

r≤128

I think r is 1/2 but is not in the option

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.