Independent and 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?

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 independent variable represent?

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

Front

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.

Front

Example of an independent variable in a plant growth experiment?

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The amount of sunlight each plant receives.

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Example of a dependent variable in a test score comparison?

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The test scores of the students.

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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 study?

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Look for the variable that is being changed or tested by the researcher.