Define the purpose of a graph? - Answers

The purpose of a graph is to present information in a visual form. This is because most people find it easier to understand information that is presented in a visual form. One of the best examples (my favourite), which presents a large quantity of data in a very effective graphic is Charles Minard's graph illustrating Napoleon's invasion of Russia and his retreat. //en.wikipedia.org/wiki/French_invasion_of_Russia#Weather_as_a_factor Florence Nightingale, first female member of the Royal Statistical Society and a pioneer in the use of statistical graphs, used polar area diagrams (a kind of pie chart) to present her findings on deaths in the Crimea to Members of the UK Parliament. //en.wikipedia.org/wiki/Florence_Nightingale#mediaviewer/File:Nightingale-mortality.jpg