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In which situation is an experiment considered fair?

Answer and explanation

Correct answer: One variable changes and other relevant variables remain the same

In a fair experiment, only the independent variable is changed while other relevant variables are controlled, or kept the same. Therefore, any difference in the result can be linked to the variable being tested. If all variables change together, the cause of the result cannot be identified. Exam tip: remember, change one variable and control the rest for a fair test.

Related tags

Fair TestExperimental VariablesIndependent VariableControlled VariablesScientific InvestigationVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary Science

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