Respuesta :
					                   An independent variable is something that doesn’t have to rely on the dependent variable (it stands alone). The dependent variable needs something to rely on. A control group is the cause and effect of the independent and dependent variable. 
					                
					                
					             
					                   control group:people not exposed. people with placebo. being used for comparison 
independent variable: thing being tested
dependent variable: outcome of study
					                
					             independent variable: thing being tested
dependent variable: outcome of study
