This document discusses different types of graphs used to represent data and their appropriate uses. It describes pie charts, bar graphs, line graphs, and pictographs. Pie charts compare parts of a whole but not changes over time. Bar graphs compare data between groups. Line graphs show how something changes over time with ups and downs. Pictographs use pictures to represent data amounts. When choosing a graph type, consider what best represents the independent and dependent variables and whether changes over time need to be shown. Key aspects like titles, axes, labels, and legends are also discussed.