In the rectangle PQRS the side PQ is a length of 2 and the side QR is a length of 4?

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.

Dbc if u do the math and stuff that what i got let me know if i was wrong