Experimental Design

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What is Experimental Design?

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Experimental design is a method used to plan and conduct experiments in a way that ensures valid and reliable results. It involves identifying variables, creating a hypothesis, and determining how to test it.

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What is an Independent Variable?

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An 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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A dependent variable is the factor that is measured or observed in an experiment. It 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 group in an experiment that does not receive the treatment or intervention, allowing for comparison against the experimental group.

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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 a Variable?

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

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What is a Constant in an Experiment?

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A constant is a factor that remains the same throughout an experiment to ensure that the test results are valid.

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What is the Purpose of Repetition in Experiments?

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Repetition in experiments helps to ensure that results are reliable and can be reproduced, reducing the impact of random errors.

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What is a Sample Size?

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Sample size refers to the number of subjects or observations used in an experiment, which affects the reliability of the results.

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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, discussing whether the hypothesis was supported or refuted.