Scientific Method and Experimental Design

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What is a hypothesis?

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A hypothesis is a testable statement that predicts the relationship between variables, often formulated as an 'if-then' statement.

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What is the purpose of a control variable in an experiment?

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The purpose of a control variable is to keep the conditions the same so we know how the independent variable (IV) affects the dependent variable (DV).

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What is a dependent variable (DV)?

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The dependent variable is the outcome or response that is measured in an experiment, which is affected by changes in the independent variable.

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What is an independent variable (IV)?

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The independent variable is the factor that is manipulated or changed in an experiment to observe its effect on the dependent variable.

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What is an experimental group?

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An experimental group is a set of subjects that are exposed to the independent variable in an experiment.

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What is a control group?

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A control group is a set of subjects that are not exposed to the independent variable and are used as a benchmark to measure how the other group performs.

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What is the scientific method?

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The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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What is a testable question?

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A testable question is a question that can be answered through experimentation and observation.

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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 and can be counted or measured.

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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.