A psychologist believes that music affects a person's mood. He has some participants listen to rock music and other participants listen to classical music, and then measures each participant's mood with a questionnaire. What are the independent and dependent variables?

Independent variable: Type of music

Dependent variable: Mood

Explanation:

While establishing a relation between two variables one variable's change affects the other. While another variable changes independently.

Here, the psychologist wants to establish relationship between the type of music a person listens to and the mood of the person.

The variable that changes independently here is the type of music. So, the independent variable is the type of music.

The variable that should change depending on the music is the mood. So, the dependent variable is the person's mood.

The mood is the dependent variable and the music (classical or rock) is an independent variable.

Explanation:

There are two types of variables in an experimental study such as Independent variable and Dependent variable.

Independent variable:

It is that variable that can be manipulated by an experimenter in the experiment. It can be controlled by an experimenter to see the effects of dependent variables.

Dependent variable:

The dependent variable as the name indicated depends on the independent variable. It is being tested and measured in a scientific experiment.