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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 a scientific 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, how do you identify the independent variable?

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The independent variable is identified as the one that is manipulated or changed by the experimenter.

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In an experiment, how do you identify the dependent variable?

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The dependent variable is identified as the outcome that is measured in response to changes in the independent variable.

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What is the purpose of controlling variables in an experiment?

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Controlling variables ensures that the experiment is fair and that the results are due to the manipulation of the independent variable.

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

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The type of fertilizer used.

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

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The height of the plants after a certain period.

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What is a hypothesis in the context of an experiment?

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

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Why is it important to have a control group in an experiment?

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A control group provides a baseline for comparison, helping to determine the effect of the independent variable.

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What does it mean to have a positive correlation between two variables?

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A positive correlation means that as one variable increases, the other variable also tends to increase.