Independent variables vs Dependent variables

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What is an independent variable?

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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?

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

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In an experiment, what does the independent variable represent?

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The independent variable represents the cause or input that is manipulated to observe its effect.

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In an experiment, what does the dependent variable represent?

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

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Example of an independent variable in a study about plant growth.

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Type of fertilizer used.

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Example of a dependent variable in a study about plant growth.

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Height of the plants.

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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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Why is it important to identify independent and dependent variables in an experiment?

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Identifying these variables helps to clarify the purpose of the experiment and ensures accurate data collection.

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What is a controlled variable?

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A controlled variable is a factor that is kept constant throughout an experiment to ensure that the results are due to the independent variable.

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How can you identify the independent variable in a question?

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Look for the factor that is being changed or tested.