Experimental Design

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What is an independent variable?

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The variable that is manipulated or changed in an experiment to test its effects on the dependent variable.

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What is a dependent variable?

Back

The variable that is measured or observed in an experiment, which is affected by the independent variable.

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What is a control group?

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The group in an experiment that does not receive the independent variable treatment and is used for comparison.

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What are trials in an experiment?

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The number of times each level of the independent variable is tested.

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What is the purpose of a hypothesis?

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

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What is the difference between qualitative and quantitative data?

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Qualitative data describes characteristics or qualities, while quantitative data involves numerical measurements.

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What is a variable in an experiment?

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Any factor, trait, or condition that can exist in differing amounts or types.

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What is the significance of randomization in experimental design?

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Randomization helps eliminate bias by ensuring that each participant or subject has an equal chance of being assigned to any group.

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What is replication in an experiment?

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Repeating an experiment to confirm the results and ensure reliability.

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What is a scientific method?

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A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.