Frequency Polygon

A frequency polygon is a line graph made by connecting the top center scores of the columns of a frequency histogram. A frequency histogram is a bar graph that uses vertical columns to visually show frequencies, which is how many times a score occurs. After a frequency histogram is constructed then the scores at the top-middle of each column are connected by a line- this is a frequency polygon. It can show the general trend of the frequency of scores by showing which frequencies are most common in a data set.