There are 2
main types of variables:
Manipulated
Variable: The variable
that is changed by the scientist; the ‘I control’ variable
The MV
(manipulated variable) is what you do!
Responding
Variable: The variable
that might change because of what the scientist changes – what is being
measured
The RV
(responding variable) is what happens.the
manipulated variable is the cause and the responding variable is the effect. This is the manipulated variable. You
controlled or manipulated what happened:
I scared my brother.This is the responding variable. This
happened in response to what you did.
My brother screamed.