Dependent and Independent Variables

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What is a dependent variable?

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A dependent variable is the outcome or effect that is measured in an experiment, which is influenced by changes in the independent variable.

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What is an independent variable?

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An independent variable is the factor that is manipulated or changed in an experiment to observe its effect on the dependent variable.

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In an experiment, if you are testing the effect of different fertilizers on plant growth, what is the dependent variable?

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The health or growth of the plants.

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In an experiment, if you are testing the effect of different fertilizers on plant growth, what is the independent variable?

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The type or brand of fertilizer used.

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How do you identify the dependent variable in a study?

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The dependent variable is identified by determining what is being measured or observed in response to changes in the independent variable.

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How do you identify the independent variable in a study?

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The independent variable is identified by determining what is being changed or controlled in the experiment.

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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 control variables in an experiment?

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Controlling variables is important to ensure that the results are due to the manipulation of the independent variable and not other factors.

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What is an example of a dependent variable in a study measuring the effect of sleep on test scores?

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The test scores of the students.

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What is an example of an independent variable in a study measuring the effect of sleep on test scores?

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The amount of sleep the students get.