Final answer:
Diagrams and schematic representations of some aspect of a system are examples of a graphical model, such as line graphs, pie graphs, and bar graphs.
Step-by-step explanation:
Diagrams and schematic representations of some aspect of a system are examples of a graphical model. Graphical models allow you to illustrate data visually and provide an intuitive sense of relationships. They can include line graphs, pie graphs, and bar graphs.