What’s the correct answer for this question?

Answer :
14/9

step-by-step

2* 7 = 14

14 / 9 = 1.555

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.