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.

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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