In a pictorial graph, icons are utilized to depict the data presented. For instance, if a survey was conducted regarding food preferences at a barbecue, we might incorporate images of a hamburger, a hot dog, and a chicken leg. However, we cannot deduce the quantities involved merely by juxtaposing the icons.
Assume there are two automobile manufacturing companies producing distinct vehicles. The monthly production figures are as follows, Company A: 40, 40, 50, 60, 60, 70, 80, 90, 50, 30, 120, 200; Company B: 20, 30, 40, 50, 60, 80, 80, 100, 100, 120, 140, 180. If 10 cars produced equals the symbol Δ, then for Company A, there will be ΔΔΔΔ for 40, ΔΔΔΔ for 50, ΔΔΔΔΔ for 60, and so on; while for Company B, ΔΔ represents 20, ΔΔΔ for 30, and continues similarly. By analyzing the symbols, a comparison can be made easily to determine which company has a higher production count, especially since symbols simplify our task of representation in the data.
