Creating a Visual
http://english.heinle.com/burnett/resources/exercises/pdf/visual.pdf

Burnett, Rebecca E.
Thomson
2001

Abstract:

Research in visual design has demonstrated that tables are “the best way to show exact numerical values” when the reader needs to compare those values. In other cases, when comparison of exact numbers is not vital, other visuals may be more appropriate. Effective professional communicators analyze their audience’s need for the data and the purpose of the visual to determine the best presentation.