Experimental Design & Variables

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What is a controlled variable?

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A controlled variable is a factor in an experiment that is kept constant to ensure that any changes in the dependent variable are due to the independent variable. In the tire experiment, the car is the controlled variable.

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What is a conclusion in an experiment?

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A conclusion is a summary at the end of an experiment that explains the results and whether the hypothesis was supported or not.

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What is the first step in a scientific experiment?

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The first step in a scientific experiment is to identify the question or problem that needs to be addressed.

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What is experimental design?

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Experimental design, also known as the scientific method, is a series of steps used by scientists to solve a problem or answer a question.

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What is a hypothesis?

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A hypothesis is a testable prediction about the relationship between two or more variables.

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What is an independent variable?

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An independent variable is the factor that is changed or manipulated in an experiment to observe its effect 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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What is the purpose of a control group?

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A control group is used in an experiment to provide a baseline for comparison, ensuring that the results are due to the independent variable.

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What is data collection?

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Data collection is the process of gathering and measuring information on variables of interest in a systematic way.

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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.