How to set up successful graphs

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

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

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

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).

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

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

Description that explains the relationship between the variables 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

Axis labels Label the x-axis and the y-axis 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

The graph should be as large as possible for your paper and data. 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.

How to determine the scale # of Coils # of Paper clips 5 4 10 7 15 11 20 14 25 18 Determine the numerical value for each grid unit that best fits the data. ℎ𝑖𝑔ℎ𝑒𝑠𝑡 𝑛𝑢𝑚𝑏𝑒𝑟 𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑙𝑖𝑛𝑒𝑠 25 7 =3.6 −𝑅𝑜𝑢𝑛𝑑 𝑡𝑜 4 coils per line 18 6 =3 - Use 3 paper clips per line

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

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 4 8 12 16 20 24 28 Number of Coils

When to use… Bar graphs Line Graphs For continuous data 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