How is the reliability of your results improved by setting up a control group in your experiment?

Setting up a control group in an experiment enhances the reliability of results by providing a baseline for comparison. It allows researchers to isolate the effects of the independent variable, ensuring that any observed changes in the experimental group can be attributed specifically to that variable rather than external factors. This helps to minimize bias and variability, leading to more accurate and valid conclusions about the relationship being studied. Ultimately, a control group strengthens the overall integrity of the experimental findings.