The visualization example in sports

Let's consider a different example here to illustrate the various different approaches to visualizing data. Instead of choosing a computational problem, we will restrict ourselves to a simple set of data, and show how many different analyses can be done that ultimately result in visualizations, to help in clarifying these analyses.

There are several major league sports in North American sports, and we will compare four of them: The National Football League (NFL), Major League Baseball (MLB), National Basketball Association (NBA), and National Hockey League. NFL has a combined team value of 9.13 billion dollars and a total revenue of 9.58 billion dollars. We will select this sport with the following data of team values and their championships (only part of the data is shown here):

The team value is one significant factor in comparing different teams, but championships also have a value. A simple plot of this data with years completed along the x axis, the...