Definition: A graph is an image that represents data symbolically. A graph is used to present complex information and numerical data in a simple, compact format. Bar graphs, line graphs, scatter graphs, and pictographs are some types of graphs.
Examples:A bar graph uses different sizes and colors of bars to represent various bits of data. Even without numbers, it is easy to visually see differences or trends by looking at the size and/or color of the bar on the graph.