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In an experimental study on the effects of sleep deprivation on depression, the number of hours that a participant stays awake is represented by the ____.​ a. random variable.b. independent variable.c.
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In an experimental study on the effects of sleep deprivation on depression, the number of hours that a participant stays awake is represented by the ____.​

a. random variable.b. independent variable.c. dependent variable.d. control variable.

User DuckMaestro
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The number of hours a participant stays awake is the independent variable of the study. This study would require the amount of sleep to be controlled and changed by the experimenters in order to view the changes in effects. This is the definition of an independent variable.

User Alberto Cerqueira
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