Variables

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What is an independent variable?

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The independent variable is the one factor that is changed or manipulated in an experiment to test its effects.

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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 changes in response to the independent variable.

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How many independent variables can be tested in a controlled experiment?

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Only one independent variable can be tested at a time in a controlled experiment.

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What are constant variables?

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Constant variables are the factors that are kept the same throughout an experiment to ensure a fair test.

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

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The control group serves as a standard for comparison, helping to isolate the effects of the independent variable.

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What does it mean to have a fair test?

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A fair test means that only the independent variable is changed while all other variables are kept constant.

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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 an experiment?

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An experiment is a scientific procedure undertaken to test a hypothesis by manipulating variables.

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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.