This diagram is a comparison chart. It is useful to understand the different characteristics of different things displayed. The objective is to make a piece of complex information easy to read and understand. These are charts with visual information that help choose between two or more ideas, concepts, objects, or data, with the added feature of giving the reader both qualitative and quantitative data to analyze. In this particular example, we have four different subjects that are compared throughout five different skills and characteristics. Marking with a cross the negative effects of some subjects to skills.