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Describe how the research team should set up their graph to follow standard conventions for factorial experiments. Specify how each of the three variables (Room Lighting, Study Method, and Exam Score) should be visually represented.
Case context: A research team conducts a factorial experiment to investigate the effects of two independent variables: 'Room Lighting' (dim vs. bright) and 'Study Method' (spaced vs. massed) on the dependent variable: 'Exam Score'. The team is designing a graph to display their results.
Question: Describe how the research team should set up their graph to follow standard conventions for factorial experiments. Specify how each of the three variables (Room Lighting, Study Method, and Exam Score) should be visually represented.
Sample answer: To follow standard conventions, the team should plot one independent variable (e.g., Room Lighting) along the -axis, and represent the other independent variable (e.g., Study Method) using differently colored bars or distinct line formats (usually explained in a legend). The dependent variable (Exam Score) must be plotted along the -axis.
Key points:
- Identify that one independent variable (either Room Lighting or Study Method) is plotted along the -axis.
- Identify that the other independent variable is represented using differently colored bars or distinct line formats.
- State that the dependent variable (Exam Score) is plotted along the -axis.
Rubric: Verify that the student's explanation correctly maps: 1) One of the independent variables (Room Lighting or Study Method) to the -axis. 2) The remaining independent variable to differently colored bars or distinct line formats. 3) The dependent variable (Exam Score) to the -axis.
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Research Methods in Psychology - 4th American Edition @ KPU
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