8. Data Density

Data density refers to the amount of data shown in a chart. A common pitfall is showing too much data in a single chart.

For example, if you are presenting the changing carbon dioxide emissions for Guatemala over the past ten years, you may not want to show that alongside all the countries in Central America on the same chart; see Figure 8.1.

Instead, it would be best if you focused exclusively on Guatemala’s carbon dioxide emissions see Figure 8.2.