1. Let's start by understanding what a divided bar graph is. It is a bar divided into segments, each representing a part of the whole. 2. Each small square in the bar graph represents a unit quantity. To understand the data, count how many squares each segment has. 3. The total number of squares represents the total quantity. 4. To find the value of each segment, multiply the number of squares in that segment by the value of one square. 5. If the value of one square is unknown, you can find it by dividing the total quantity by the total number of squares. 6. For example, if the total quantity is $Q$ and the total number of squares is $N$, then the value of one square is $$\frac{Q}{N}$$. 7. Then, for a segment with $n$ squares, the value is $$n \times \frac{Q}{N}$$. 8. This way, you can interpret the divided bar graph by counting squares and using these formulas.