Michigan Test for Teacher Certification (MTTC) Secondary Integrated Science Practice test

Which variable on a graph is typically placed on the y-axis?

1. Independent variable

2. Dependent variable

3. Control variable

4. Manipulated variable

The correct answer is: Dependent variable

The variable that is typically placed on the y-axis of a graph is the dependent variable. This arrangement is standard in graphing because the dependent variable represents the outcome or response that is measured in an experiment. In other words, it is the variable that changes in response to the manipulation of the independent variable, which is usually plotted on the x-axis. When researchers conduct experiments, they adjust or manipulate the independent variable to observe how it affects the dependent variable. By placing the dependent variable on the y-axis, it allows for a clear visual representation of the relationship between the two variables. This method aids in analyzing trends and patterns in the data, making it easier to draw conclusions about how the independent variable influences the dependent variable. In summary, the dependent variable’s placement on the y-axis highlights its role as the effect or outcome that is impacted by changes in the independent variable, which is fundamental to interpreting experimental data effectively.