The dependent and the independent variable in this experiment is mood and time, respectively.
The Independent variables are that variables whose value does not depend on any other variable. And it causes the change in other variables.
The dependent variable is those variables whose value is not independent and change in this variable is dependent on the change of the independent variable.
Given that You are conducting an experiment to find out whether the time a person wakes up affects his or her mood. Therefore, we want to know whether the mood of a person is dependent on the time he or she wakes up or not.
Now, since mood is dependent on time, therefore, mood is the dependent variable in the experiment and time is the independent variable in the experiment.
Hence, the dependent and the independent variable in this experiment is mood and time, respectively.
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