In a controlled experiment,what is the group that does NOT receive treatment is called?

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The control group is the group that does not receive treatment in a controlled experiment. This group provides a baseline for comparison with the experimental group, which does receive treatment. The double-blind group refers to a study design in which neither the participants nor the researchers know which group is receiving the treatment, while the placebo effect refers to the observed phenomenon in which people may experience a beneficial effect simply from believing that they are receiving a treatment, even if the treatment is actually a placebo.

In a Controlled Experiment,what Is the Group That Does NOT