In a scientific study, a control group is used to establish a cause-and-effect relationship by isolating the effect of an independent variable. Researchers change the independent variable in the treatment group and keep it constant in the control group. Then they compare the results of these groups.
In a scientific study, a control group is used to establish a cause-and-effect relationship by isolating the effect of an independent variable. Researchers change the independent variable in the treatment group and keep it constant in the control group. Then they compare the results of these groups.
The Declaration of Independence states three basic ideas: (1) God made all men equal and gave them the rights of life, liberty, and the pursuit of happiness; (2) the main business of government is to protect these rights; (3) if a government tries to withhold these rights
