Variables in an Experiment

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What is a variable in an experiment?

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A variable is any factor, trait, or condition that can exist in differing amounts or types in an experiment.

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What is a dependent variable?

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The dependent variable is the factor that is measured or observed in an experiment, which changes in response to the independent variable.

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What is an independent variable?

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The 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 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 valid.

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

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Controlled variables are important because they help ensure that the results of the experiment are due to the independent variable and not other factors.

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Give an example of a dependent variable in an experiment about studying.

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An example of a dependent variable could be the student's math grade.

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Give an example of an independent variable in an experiment about exercise.

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An example of an independent variable could be the amount of exercise a person does.

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What is the relationship between independent and dependent variables?

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The independent variable is what you change, and the dependent variable is what you measure as a result of that change.

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In an experiment, if you change the type of fertilizer used, what is the independent variable?

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The independent variable is the type of fertilizer.

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In an experiment measuring the effect of sunlight on plant growth, what is the dependent variable?

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The dependent variable is the growth of the plants.