Automobiles Traveling on a Road with a Posted Speed Limit

Multiple Choice

Automobiles traveling on a road with a posted speed limit of 65 miles per hour are checked for speed by a state police radar system.The following table is a frequency distribution of speeds. When using a polygon to graph quantitative data,what does each point represent?

A) The lower limit of a particular class and its width
B) The midpoint of a particular class and its associated frequency or relative frequency
C) The midpoint of a particular class and its associated cumulative frequency or cumulative relative frequency
D) The upper limit of a particular class and its associated cumulative frequency or cumulative relative frequency