CONTROLLING VARIABLES

The Variables

1. Manipulated variable or What to change. (tc)

2. Responding variable or What to observe/measure (to)

3. Constant variable or What to keep the same (same)

1. What to observe/measure (to)

   

-          Thing that is being observed / measured /investigated / recorded / the result of an

      investigation.

2. What to change (tc)

     

-          Thing that is changed or being manipulated in an investigation and it has an effect on

      thing that is observed.

3.  What to keep the same

    

-          Thing that is always the same and kept constant  in an  investigation.