“…A well-designed graph can be a vivid, memorable, and easy-to-understand depiction of quantitative information (Larkin & Simon, 1987;Shah, Freedman, & Vekiri, 2005;Smith, Best, Stubbs, Archibald, & Roberson-Nay, 2002;Tufte, 2001). For those reasons, graphs are used extensively in textbooks, scientific journals, and the popular print media (Shah et al, 2005;Zacks, Levy, Tversky, & Schiano, 2002).…”