Types of Variables

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What is an independent variable?

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The independent variable is the ONE thing you change in an experiment.

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

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Only one independent variable should be tested in a controlled experiment.

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What is a dependent variable?

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The dependent variable is the outcome that you measure in an experiment, which is affected by the independent variable.

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What is a control group?

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The control group is the group in an experiment that does not receive the treatment or change, used for comparison.

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What is an inference?

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An inference is a conclusion drawn from observations or evidence.

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What is a qualitative observation?

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A qualitative observation describes characteristics or qualities that cannot be measured with numbers.

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What is a quantitative observation?

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A quantitative observation involves measurements and can be expressed with numbers.

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What is the purpose of 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 an experiment?

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An experiment is a scientific procedure undertaken to test a hypothesis.

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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.