1. T YPES OF GRAPHS Pie chart: shows how a whole is divided into percents

2. Line graph: Shows trends in data over time.

3. Scatter plot: used to determine if two variables are related

4. Bar graph: compares groups of information

5. R ECOGNIZING P ATTERNS IN G RAPHS In a direct relationship, when one variable increases, so does the other.

6. In an inverse relationship, when one variable increases, the other decreases.

7. When there is no relationship the graph looks like a collection of dots.

8. Which graphs show a direct relationship? A, E, F

9. Which graphs show an inverse relationship? B, C

10. Which graphs show a linear relationship? A, B, D, F

11. Which graphs show a non-linear relationship? C, E

12. In which graph does a change in the x-variable cause NO CHANGE in the y-variable? D

13. Which graph shows a stronger relationship between variables, graph A or graph F? A