CONTROLS AND VARIABLES

What is a variable? Any factor that can exist in varying

amounts or types Parts of an experiment that impact an

outcome

Types of variables Control Independent (Manipulated) Dependent (Responding) Constant

Controlled Variable Variable that is constant and unchanged Strongly influences values (other

variables) We compare everything else to the

control

Independent Variable Manipulated Variable The variable you vary to see how it may

affect the dependent variable

Dependent Variable Responding Variable The variable you measure as a result of

changing the independent variable

Constants It is important to KEEP ALL VARIABLES

CONSTANT, EXCEPT FOR THE INDEPENDENT VARIABLE

Provides best results

When this is done, we have…