Experimental Design Practice

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What is an independent variable?

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

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What is a dependent variable?

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The 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 a control group?

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A control group is a standard of comparison in an experiment that is not exposed to the treatment or independent variable.

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What is the purpose of conducting multiple trials in an experiment?

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Conducting multiple trials helps to ensure the reliability and accuracy of the results by minimizing the effects of random variation.

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How do you identify the independent variable in an experiment?

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

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How do you identify the dependent variable in an experiment?

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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 significance of having a control group in an experiment?

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A control group allows researchers to determine the effect of the independent variable by providing a baseline for comparison.

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What is the role of a hypothesis in experimental design?

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A hypothesis is 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 the context of experimental design?

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A variable is any factor, trait, or condition that can exist in differing amounts or types in an experiment.