Experimental Design

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What is an independent variable in an experiment?

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The independent variable is the factor that is changed or manipulated by the experimenter to observe its effect on the dependent variable.

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What is a dependent variable in an experiment?

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The dependent variable is the factor that is measured or observed in an experiment to see how it is affected by changes in the independent variable.

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What is a controlled variable?

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A controlled variable is a factor that is kept constant throughout an experiment to ensure that any changes in the dependent variable are due to the independent variable.

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Why is it important to change only one variable at a time in an experiment?

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Changing only one variable at a time helps to isolate the effects of that variable, making it easier to determine its impact on the dependent variable.

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What is the purpose of a hypothesis in an experiment?

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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 an experiment?

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An experiment is a scientific procedure undertaken to test a hypothesis by manipulating variables and observing the outcomes.

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What is the role of observation in an experiment?

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Observation is the process of gathering data through the senses or instruments to analyze the results of an experiment.

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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 independent variable.

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What does it mean to replicate an experiment?

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To replicate an experiment means to repeat it under the same conditions to verify the results.

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What is a conclusion in the context of an experiment?

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