Agear ratio is the ratio of the teeth on the front sprocket and the teeth on the rear sprocket. if a bike has 36 teeth on the front sprocket and 12 teeth on the rear sprocket, what is the gear ratio for the bike?

Gear ratio= front teeth:rear teeth
=36:12
On simplifying, we get.
3:1

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.