Independent and dependent variables

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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 dependent variable?

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The 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 are control variables?

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Control variables are the factors that are kept constant to ensure a fair test.

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What is the purpose of an experiment?

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The purpose of an experiment is to test a hypothesis by manipulating the independent variable and observing the effect on the dependent variable.

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How do you identify the independent variable in a question?

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The independent variable is usually the one that is being changed or tested in the experiment.

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How do you identify the dependent variable in a question?

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The dependent variable is usually the outcome or effect that is being measured in the experiment.

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What is an example of an independent variable?

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An example of an independent variable is the amount of time spent studying when testing its effect on test scores.

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What is an example of a dependent variable?

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An example of a dependent variable is the test scores when testing the effect of study time.

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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 independent variable and not other factors.

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What is a hypothesis?

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A hypothesis is a testable prediction about the relationship between the independent and dependent variables.