RS Aggarwal Solutions for Class 7 Chapter 22 Bar Graph represents Bar Graph on Graph Paper, a bar graph is useful for comparing facts. The bars provide a visual display for comparing quantities in different categories. Bar graphs help us to see relationships quickly. Bar graphs can have horizontal or vertical bars. A bar graph is used to represent data visually using bars of different heights or length. Bar graphs take various forms depending on the type and complexity of the data they represent. The data is graphed either horizontally or vertically, to compare different values and draw conclusions quickly and easily. A bar graph will have a label, axis, scales and bars, which represent the measurable values such as amounts, ages and percentages etc.