Bilateral graph

Bilateral graphs depict two different sets of data that have occurred over the same period of time. These graphs can be used to show increases or decreases in in particular events over a given period of time. Foe example if temperatures were recorded over a ten year period along g with sea level change we could use a bilateral graph to depict the relationship between the two events over the same period of ten years.This graph shows the re lations between ages and specific types of cancer.

Link: http://www.pnas.org/content/102/4/1071.full