Data can be very powerful. If you can actually understand what it's telling you, that is.
It's not easy to get clear takeaways by looking at a slew of numbers and stats. You've got to have the data presented in a logical, easy-to-understand way.
Enter data visualization. The human brain processes visual information better than it processes text -- so using charts, graphs, and design elements, data visualization can help you explain trends and stats much more easily.