# Graphs

## Graphs

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##### Presentation Transcript

1. Graphs How to set up successful graphs

2. Variables • Definition – a type of category you are trying to measure • an object, event, idea, feeling, time period • Types of Variables • Independent • Dependent

3. Independent Variable • A variable whose value does not depend on that of another • Is not changed by other variables being measured • What you choose and manipulate

4. Dependent Variable • A variable whose value depends on that of another • Depends on the independent variable • What you measure in the experiment

5. How to determine the variables • Fill in the variables to determine which makes the most sense • (Independent variable) causes a change in (Dependent variable) and it isn’t possible that (Dependent variable) could cause a change in (Independent variable).

6. How to set up your graph! Y Axis (This is for your dependent variable)

7. How to set up your graph! X Axis (This is for your independent variable)

8. Title • The relationship between the number of coils on an electromagnet and the number of paper clips picked up • Description that explains the relationship between the variables

9. Axis labels • The relationship between the number of coils on an electromagnet and the number of paper clips picked up Label the x-axis and the y-axis Y Axis = Dependent Variable Number of paper clips X Axis = Independent Variable Number of coils

10. SCale • The relationship between the number of coils on an electromagnet and the number of paper clips picked up The graph should be as large as possible for your paper and data.

11. # of Coils # of Paper clips 5 4 10 7 15 11 20 14 25 18 How to determine the scale • Determine the numerical value for each grid unit that best fits the data. 4 coils per line - Use 3 paper clips per line

12. Labeling the axes • The relationship between the number of coils on an electromagnet and the number of paper clips picked up 18 15 12 9 6 3 0

13. Graphing data • The relationship between the number of coils on an electromagnet and the number of paper clips picked up 18 15 12 9 Number of Paper Clips 6 3 0 8 4 12 24 16 20 28 Number of Coils

14. When to use… • Bar graphs • Used to show data that are not continuous. • Allows us to compare data like amounts or frequency or categories • Allow us to make generalizations about the data • Help us see differences in data • Line Graphs • For continuous data • Useful for showing trends over time