What is the name of the group that has variables changed during an experiment?

The experimental group is the correct term for the group in an experiment where the variables are changed or manipulated. In research, particularly in experimental designs, the experimental group is subjected to the independent variable, which is the condition or treatment that the researcher alters to observe its effect. This group is critical for establishing cause-and-effect relationships, as it allows researchers to measure the outcomes and compare them against a control group, which does not receive the experimental treatment.

Understanding the role of the experimental group is fundamental in determining how variations in the independent variable produce changes in the dependent variable. This relationship helps researchers draw conclusions about the impact of the manipulation on the outcomes being studied.

Meanwhile, the other groups, such as the control group, remain unchanged, providing a baseline for comparison, while the other terms—dependent and independent groups—are less commonly used to describe the roles in experimental designs. The dependent variable refers to what is measured in the experiment, while the independent variable is what is changed. Knowing these distinctions is essential for grasping research methodologies effectively.