How Not to Lie with Visualization

Abstract

H ow data are represented visually has a pow- erful effect on the perception and interpretation of the structure in those data.In Fig. I, four representations of a magnetic-resonance-imaging (MRI) scan of a human head are shown.The only difference between these images is the mapping of color to data values, yet the four representations look very different.Furthermore, the inferences an analyst would draw from these representations