Simplify this please

3*x*x*x*y*y*y*y*2*x*x*x*x*x*x*y

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.

The slope best fit isc. 1/6 mile per hour