Independent and Dependent Variables Quiz

What is the definition of an independent variable?

• A variable that is manipulated or controlled by the researcher in an experiment.

• A variable that is determined by chance in an experiment.

• A variable that is not relevant to the experiment.

• A variable that is measured in an experiment.

What is the definition of a dependent variable?

• A dependent variable is the variable that remains constant in an experiment or study.

• A dependent variable is the variable that is manipulated in an experiment or study.

• A dependent variable is the variable that is not affected by other variables in an experiment or study.

• A dependent variable is the variable being measured or observed in an experiment or study.

Which variable is manipulated or changed by the researcher in an experiment?

• dependent variable

• control variable

• confounding variable

• independent variable

Which variable is measured or observed in an experiment?

• extraneous variable

• control variable

• dependent variable

• independent variable

In a study investigating the effect of temperature on plant growth, what is the independent variable?

• water availability

• soil pH

• light intensity

• temperature

In a study investigating the effect of temperature on plant growth, what is the dependent variable?

• amount of sunlight

• soil pH

• plant growth

• temperature

In a study investigating the effect of studying with music on test scores, what is the independent variable?

• music

• studying with music

• effect of studying

• test scores

In a study investigating the effect of studying with music on test scores, what is the dependent variable?

• test scores

• study environment

• study time

• music

Why is it important to control variables in experiments?

• To make the experiment more complicated.

• To save time and resources.

• To ensure accurate and reliable results

• To confuse the participants.

Give an example of a controlled variable in an experiment.

• Volume

• Pressure

• Temperature

• Time