Pie chart advantages:- They are fiialamr.Pie chart disadvantages- They rely on human ability to compare areas or angles, which is less reliable than the human ability to compare lengths and distances.- They have one purpose, to show parts of a whole, and aren't very good at that.- People underestimate their effectiveness.- They are not information-dense.- Their poor effectiveness is magnified if multiple pie charts are used together.I will refer you to writings by Bill Cleveland, Edward Tufte, Stephen Few, and many others that give strong arguments against the use of these graphs.

by Andyo 11:10:37 PM 2012.07.25