Histogram properties
A barchart of data that have been grouped into a frequency distribution
Bar height: Represents the absolute frequency for each return interval
Frequency Polygon Properties
The midpoint of each interval is plotted on the x-axis and the absolute frequency for that interval is plotted on the y-axis. Connect neighboring points with a straight like (looks like a stock chart - eliminates the bars basically)
*Frequency polygon adds a degree of continuity to the representation of the distribution