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Which variables are not deliberately changed in an experiment?

Answer and explanation

Correct answer: Controlled variables

Controlled variables are factors kept the same throughout an experiment, so they are not deliberately changed. This ensures that any change in the result is due only to the independent variable. The independent variable is changed, while the dependent variable is measured for its effect. Exam tip: If a factor is kept constant, it is a controlled variable.

Related tags

Controlled VariablesIndependent VariablesDependent VariablesFair TestExperimental VariablesVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary Science

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