Graph Comprehension: An Experiment in Displaying Data as Bar Charts, Pie Charts and Tables with and without the Gratuitous 3rd Dimension
Matthias Schonlau, Ellen M. Peters · 2008
Investigates whether the type of data display (bar chart, pie chart, or table) or adding a gratuitous third dimension (shading to give the illusion of depth) affects the accuracy of answers of questions about the data.