A researcher examines whether scores on a final exam are


A researcher examines whether scores on a final exam are influenced by whether background music is soft, loud, or absent.

What is the independent variable?

Is the independent variable manipulated or not manipulated?

How many levels are there for the independent variable?

What is the dependent variable?

What is the scale of measurement for the dependent variable?

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Dissertation: A researcher examines whether scores on a final exam are
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