Experimental Design

Front

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 or observed in an experiment, typically plotted on the y-axis of a graph.

Front

What are constants in an experiment?

Back

Factors that are kept the same throughout an experiment to ensure that the results are valid.

Front

What is a control in an experiment?

Back

A standard for comparison in an experiment, which is not exposed to the experimental treatment.

Front

What is the purpose of an experimental design?

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To establish a systematic method for testing hypotheses and determining cause-and-effect relationships.

Front

What does it mean to have a fair test in an experiment?

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A fair test is one where only one variable is changed at a time while all other conditions are kept constant.

Front

How do you identify the independent variable in a study?

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It is the variable that the researcher manipulates or changes to observe its effect on the dependent variable.

Front

Why is it important to have a control group?

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A control group helps to isolate the effects of the independent variable by providing a baseline for comparison.

Front

What is the significance of replicating experiments?

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Replication increases the reliability of results and helps to confirm findings.

Front

What is a hypothesis?

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A testable prediction about the relationship between two or more variables.