Biology, 28.01.2020 03:31, kierafisher05

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

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What is the main purpose of controlled variables in an experiment?
they compare the findings...