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What is the main purpose of controlled variables in an experiment?
They help compare the findings of one experiment to another.
They help produce reliable results without repeating the experiment.
They help investigators practice measuring without affecting the results of the experiment.
They help ensure that changes in the independent variable are affecting the dependent variable.

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kristynkellogg
They help ensure that the changes of the independent variable are affecting the dependent variable

Answer: They help ensure that changes in the independent variable are affecting the dependent variable.

A controlled variable can be defined as a variable in a scientific experiment. It is a variable that is kept constant and remains unchanged throughout the course of the investigation. It is kept constant to determine the relative relationship between the dependent and independent variables. The changes in the independent variable can be observed or measured in order to determine the effect on the dependent variable.

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