Independent & Dependent variable

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What is an independent variable?

Back

An independent variable is the factor that is changed or controlled in an experiment to test its effects on the dependent variable.

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What is a dependent variable?

Back

A dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

In an experiment, what does the term 'control' refer to?

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A control is a standard against which the results of an experiment are compared. It is not changed during the experiment.

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How do you identify the dependent variable in a research question?

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The dependent variable is usually the outcome or effect that is being measured in response to changes in the independent variable.

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What is the relationship between independent and dependent variables?

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The independent variable is manipulated to observe its effect on the dependent variable.

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Give an example of an independent variable in a plant growth experiment.

Back

The type of fertilizer used is an independent variable in a plant growth experiment.

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Give an example of a dependent variable in a study about studying habits and test scores.

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Test scores are the dependent variable in a study about studying habits.

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What is the purpose of having a control group in an experiment?

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The control group helps to ensure that the results of the experiment are due to the independent variable and not other factors.

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Why is it important to keep other variables constant in an experiment?

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Keeping other variables constant ensures that any changes in the dependent variable are solely due to the manipulation of the independent variable.

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What is an example of a research question involving independent and dependent variables?

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Does the amount of sunlight affect the growth of a plant? (Independent: amount of sunlight, Dependent: plant growth)