Factor tree of short division 999​

I think it is 1! I did it like this. 9•9• 9=1

I put period but it is the division sign

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.