A Bar graph, also known as a bar chart, is a graph that uses rectangular bars to represent different values, to show comparisons among categories

Let us consider an example of average salary earned by different age group of people in different states. Bar graphs are most commonly drawn vertically, though they can also be depicted horizontally.

**Steps:**

- Collect your data.
- Draw an x and a y-axis.
- Label the x-axis.
- Label the y-axis.
- Draw your bars.
- Interpret the data