Experimental Design

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What is an independent variable?

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An independent variable is the factor in an experiment that is changed or controlled to test its effects 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 in an experiment?

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A control group is used as a standard for comparison to determine the effect of the independent variable.

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How many variables should be changed in a well-designed experiment?

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Only one variable should be changed at a time to ensure that the results are due to that variable.

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What is a hypothesis?

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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 the significance of replicating an experiment?

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Replicating an experiment helps to verify results and ensure that they are reliable and not due to chance.

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What is a 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 variable in an experiment?

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

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What is a conclusion in scientific research?

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A conclusion is a summary of the results of an experiment, explaining whether the hypothesis was supported or not.