NO. One at a time. If I had a problem with my car, and I was wiggling a wire while my dad was changing a questionable fuse, and then the car started, what fixed it? The wire or the fuse?
There are three types of variables tested: manipulated variables, controlled variables, and experimental variables.
independent variables :):):):):):):):):):):):)
Independant variables
Independant variables
It depends on the experiment. Normally only one is tested at a time because they can affect the experiment. Variables are tested in a controlled experiment to see whether they affect the outcome and also how.
independent variables :):):):):):):):):):):):)
Independent variables
independent variables :):):):):):):):):):):):)
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the reason it is important to controll the variables in an experiment is because if the variables are not controlled in an experiment it will be impossible to reproduce the experiment. which also will make it impossible to prove the theory being tested
Only the one being tested