Reality check Above all else show the data – Edward Tufte The presentation of data with the help of various charts and graphs has become an almost indispensable component of scientific research. However, unlike many other subjects, data visualization is rarely taught in undergraduate and postgraduate courses. An investigator wants to communicate complex ideas of the study findings with the help of graphs. A significant challenge before the researcher is to produce quality graphs for easy and effective communication. Therefore, the researcher intends to know the answers to a few questions before finalizing the graphical display. • What is graphical excellence? • How to achieve graphical excellence? • What is the role of the preattentive attributes in graphical excellence? • Why Gestalt principles are important for attaining graphical excellence?