Histogram

http://www.whizdog.com/qmblog/images/histogram_032005_5927_image001.gif

A Histogram is used in statistics to show different frequencies of data represented by rectangular boxes. For example, in this Histogram, representing employee salary, the X axis shows different salary groups and the Y axis shows the frequency. From this graph you can see that about 46 employees make a salary around 2100-4290 and about 10 employees make about 4290-6480 a year.