vocabulary words. 1. a diagram showing how one quantity depends on or changes with another quantity. independent variable 2. a graph that uses rectangular bars to show the comparisons or relationships. dependent variable 3. a graph that divides up a circle to show the relationship of the parts. vertical axis 4. a graph in which points are plotted and then the points are joined with a line. axis 5. a graph that presents statistical data by using pictures. graph 6. data which changes because it is related to (dependent upon) something else. pie chart 7. data whose value does not depend upon that of another variable. bar graph 8. the horizontal or vertical line on a graph. horizontal axis 9. an axis that is parallel with the horizon. pictograph 10. an axis that is perpendicular to the horizontal axis. line graph Next Question Read Next Section Ask for help