The following is a quote from Ben Schneiderman:
"Visualization gives you answers to questions you didn't know you had."
In the Chapter 2, Setting the Purpose and Identifying Key Factors, we discussed the different intentions and motives you might have for developing a data visualization. In most cases we think of it as something we create and provide to others. What we sometimes neglect to consider is the potential of visualization for ourselves, when we are the intended users looking to discover insights about a subject.
This is where we consider the application of visual analysis. Visually analyzing a dataset, and employing both inductive and deductive reasoning, enables us—as the designer—to learn more about ...