Line Graph Guidelines
for Mr. Reed’s Science Class
Line graphs provide a visual picture of the relationship between variables and how that relationship changes. The following rules are how to set up a graph. Following these guidelines will help you maximize your score for the assignment.
Rule #1: Always give your graph a title.
The title should inform the reader what the data in the graph represents. The title of the graph should be the same as your data table. If you are making a multi-line graph, the title should connect all the data tables together with a similarity.
Example: The title of the graph for the data table you just completed will be (write the title below above the graph).
Rule #2: The x-axis (the horizontal axis) of a graph is always your independent variable and the
y-axis (the vertical axis) is the dependent variable.
For Mr. Reed’s classes, the starting point for both the x-axis and y-axis will be at the same point. You are to start at the lower left corner of the graph paper and going on a diagonal, count 6 squares. Use that intersection as a starting point to draw the x & y-axes. Do this now on the sample graph paper below. Then draw a line from that point following the lines on the graph paper all the way to the top and all the way to the right of the paper.
Rule #3: Always label the x and y axes and give the units used to measure those variables.
The independent variable is written below the x-axis. Remember to leave room just below that line to write a scale. The dependent variable is written to the left of the y-axis. It is okay to turn the page sideways to write the variable and units. Leave room to write a scale next to the line (do not write the scale sideways). Either behind each variable or below them, write the units used to measure that variable in parentheses ( ). Write the variables and units used for most recent experiment in the space around the graph paper on the other side of this paper.
Rule #4: Make sure your data is graphed as large as possible in the space provided on the graph
paper.
Let’s face it, you do not like looking at tiny graphs. Neither do I. If you make large graphs, it will be easier to see what you are doing. It will be easier for me to read too. Plus, I will be happier too.
Rule #5: Connect the data points.
Use a ruler to connect the data points. Starting on the left, connect the dots in succession.