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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.

Front

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

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

Back

The amount of sunlight the plants receive.

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

Back

The height of the plants after a certain period.

Front

In the experiment, if you change the amount of water given to plants, what is the independent variable?

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The amount of water.

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In the experiment, if you measure how tall the plants grow, what is the dependent variable?

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The height of the plants.

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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 happens to the dependent variable if the independent variable is increased?

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The dependent variable may increase, decrease, or remain the same, depending on the nature of the relationship.

Front

In a study measuring the effect of study time on test scores, what is the independent variable?

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The amount of study time.