This study investigates whether pixel graphs more accurately represent percentage based data than pie graphs or bar graphs. Participants were asked to answer 24 questions each pertaining to a different graphical stimulus. Results suggest that pixel graphs are significantly better at representing large quantities of percentage based data than pie graphs.

Data, Graph, Information Representation
Lecture Notes in Computer Science

Bell, J. (Jolie), & Davies, J. (2010). Are pixel graphs are better at representing information than pie graphs?. In Lecture Notes in Computer Science. doi:10.1007/978-3-642-14600-8_31