How to Create a Bar Graph With Two Independent Variables
A graph is more than just an image. Graphing is a way to visually simulate data accumulated from studies and other sources. A bar graph illustrates how different independent variables measure up against each other by using a singular outcome or quality, like the number of bicycles different factories produce or the different toys sold during a month. Creating a bar graph with two independent variables can illustrate and quantify their respective performances.
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Instructions
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1
Draw two perpendicular lines with the straight edge of the ruler that connect at a 90-degree angle. Label the vertical line "y-axis" and the horizontal line "x-axis."
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2
Measure out and mark equally spaced segments on the y-axis. Label the markings in accordance with the data. For example, if the data is for the amount of miles by two people during the week, then label each marking on the y-axis as either 5- or 10-mile increments.
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3
Place the ruler lengthwise along the y-axis with the top part even with the y-axis amount of the first variable. For example, if the first runner ran 25 miles in one week, then place the top part of the ruler even with the 25-mile marker.
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4
Trace the ruler from where it intersects the x-axis on the left side, up and around to where it intersects the x-axis on the right side of the ruler. Color in the tracing with a colored pen or pencil, and label the bar as the first independent variable.
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5
Repeat steps 3 and 4 to the right of the first variable for the second variable. For example, if the second runner ran 40 miles, then trace a bar that is even to the 40-mile marker on the y-axis to the right of the first bar.
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