Why Do We Need Controls?
Controls Allow the Experimenter to Minimize the Effects of Factors Other Than the One Being Tested. It's How We Know an Experiment Is Testing the Thing It...
Controls allow the experimenter to minimize the effects of factors other than the one being tested. It's how we know an experiment is testing the thing it claims to be testing. This goes beyond science — controls are necessary for any sort of experimental testing, no matter the subject area.
Why is it important to have controls?
A control is important for an experiment because it allows the experiment to minimize the changes in all other variables except the one being tested.
Are controls always necessary?
Are controls always necessary? A true experiment (a.k.a. a controlled experiment) always includes at least one control group that doesn't receive the experimental treatment. Without a control group, it's harder to be certain that the outcome was caused by the experimental treatment and not by other variables.
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