experimental design

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What is quantitative data?

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Data recorded as numbers, which can be measured and compared.

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What is an independent variable?

Back

The variable 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?

Back

The variable that is measured in an experiment; it is affected by the independent variable.

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What is a control group?

Back

The group in an experiment that does not receive the treatment and is used as a benchmark to measure how the other tested groups do.

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What is an experiment?

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A scientific procedure undertaken to test a hypothesis by collecting data under controlled conditions.

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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 two or more variables.

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What is a variable in an experiment?

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Any factor, trait, or condition that can exist in differing amounts or types.

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What is the difference between independent and dependent variables?

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The independent variable is manipulated to observe its effect, while the dependent variable is measured to see how it responds.

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What does it mean to control variables in an experiment?

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To keep all other variables constant except for the independent variable to ensure a fair test.

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What is the significance of replicating an experiment?

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Replication helps to confirm the results and ensures that they are reliable and not due to chance.