| How To Construct a Line Graph On Paper |
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| Step | What To Do | How To Do It |
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| 1 | Identify the variables | - Independent Variable -
(controlled by the experimentor)- Goes on the X axis (horizontal)
- Should be on the left side of a data table.
- Dependent Variable -
(changes with the independent variable)- Goes on the Y axis (vertical)
- Should be on the right side of a data table.
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| 2 | Determine the variable range. | - Subtract the lowest data value from the highest data value.
- Do each variable separately.
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| 3 | Determine the scale of the graph. | - Determine a scale,
(the numerical value for each square),
that best fits the range of each variable. - Spread the graph to use MOST of the available space.
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| 4 | Number and label each axis. | - This tells what data the lines on your graph represent.
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| 5 | Plot the data points. | - Plot each data value on the graph with a dot.
- You can put the data number by the dot, if it does not clutter your graph.
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| 6 | Draw the graph. | - Draw a curve or a line that best fits the data points.
- Most graphs of experimental data are not drawn as "connect-the-dots".
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| 7 | Title the graph. | - Your title should clearly tell what the graph is about.
- If your graph has more than one set of data, provide a "key" to identify the different lines.
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