What a controlled compares results from a control group with result from experimental groups?

A controlled experiment compares results from a control group, which does not receive the experimental treatment, with results from one or more experimental groups that do. This setup allows researchers to isolate the effect of the treatment by minimizing the influence of external variables. By analyzing the differences in outcomes between these groups, scientists can determine whether the treatment has a significant effect. Ultimately, this method enhances the reliability and validity of the experimental findings.