Most people visualize information better when they see it in graphic. Graphics help people see relationships and make comparisons with greater ease. Even if you can deal with the abstraction of textual data with ease, performing data analysis is about communication. Unless you can communicate your ideas to other people, the act of obtaining, shaping, and analyzing the data has little value beyond your own personal needs.
This lesson focuses on getting you up to speed quickly with MatPlotLib. You will use MatPlotLib quite a few times later on.