Why is it important to limit the variables in an experiment?

Answer 1

To understand this you need to remember that the independent variable is a condition that you can change, and the dependent variable is the outcome that you see.

If you have two independent variables, and you change both during an experiment, how are you going to tell which one caused the change to the outcome?

So, you only change one independent variable at a time.

Answer 2

You need to control variables in an experiment so you can have greater confidence that what happens during the experiment is because of how you have manipulated the variable that interests you, the variable that you are studying. Without controls you are left with doubts about what actually brought about the results you observe... the variable you are studying, or some other variable that you did not account for.

Answer 3

because knowing what is the difference between objects and produres and data is important

Answer 4

Without variables, you have no experiment. You need variables in an experiment because without them you are left with multiple tests with an empty data table and no conclusion or discussion.

Answer 5

to narrow down the differential results that would occur from testing more than one variable at a time.

Answer 6

When performing an experiment it is very important to have a control set. It is important to have a control set because it ensures that the experiment can be repeated as many times as necessary.

Answer 7

It is so the experiment is a fair test.