Explain why it is important to keep all variables that might affect the dependent variable, other than the manipulated variable, constant.

Question

anonymous · Answer

Hey you do know you are on biology right ?

anonymous · Answer

You are trying to look for a relationship between the manipulated variable and the dependent variable. If you have multiple confounding variables, you cannot accurately conclude the relationship between the manipulated and dependent variable because the other variables that are not controlled for could be the reason for seeing a certain change.