Visual encoding techniques are methods used to represent data visually, making it easier to understand and analyze. These techniques can include using colors, shapes, and sizes to convey different information. For example, a bar chart might use varying heights of bars to show quantities, while a pie chart uses slices to represent parts of a whole. Another common technique is data visualization, which combines various visual elements to tell a story with data. By employing infographics or heat maps, complex information can be simplified, allowing viewers to quickly grasp trends and patterns. This enhances comprehension and decision-making.