In an experiment, what group receives the treatment?

Question

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The experimental group is the group that receives the treatment being tested in the experiment. This group is compared to a control group, which does not receive the treatment, in order to determine the effectiveness of the treatment. A comparison group may also be used, but this group is not directly involved in the experiment and is used to provide context for the study. A cohort group refers to a group of individuals who share a common characteristic or experience, and may be used in an observational study.

In an Experiment, What Group Receives the Treatment