What is the standard for comparison in an experiment the independent variable is not applied to the control group?

In an experiment where the independent variable is not applied to the control group, the standard for comparison is the control group itself. The control group serves as a baseline to measure the effects of the independent variable on the experimental group. By comparing the outcomes of the experimental group with those of the control group, researchers can determine the impact of the independent variable while isolating other factors. This comparison helps to validate the results and conclusions drawn from the experiment.