Science: Variables, Control Group, Controls

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What is a control group?

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A control group is a part of an experiment that serves as a basis of comparison and does not receive the tested variable.

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What is an independent variable?

Back

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

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What is a dependent variable?

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

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What are controlled variables?

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Controlled variables are factors that are kept constant throughout an experiment to ensure that the results are due to the independent variable.

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

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The purpose of a control group is to provide a standard for comparison against the experimental group, helping to isolate the effects of the independent variable.

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How does one identify the independent variable in an experiment?

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The independent variable is identified as the one that is intentionally changed or varied by the experimenter.

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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, which is measured.

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Why is it important to have controlled variables in an experiment?

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Controlled variables are important to ensure that the experiment is fair and that the results are valid, as they eliminate alternative explanations.

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What does it mean to say a variable is 'controlled'?

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A controlled variable is one that is kept constant to prevent it from influencing the outcome of the experiment.

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What is an experimental group?

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An experimental group is the group in an experiment that receives the treatment or the variable being tested.