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https://undsci.berkeley.edu/fair-tests-a-do-it-yourself-guide/ By reading the link sent above... Read about the importance of a control group and controlling variable: What is a control group? Why is

https://undsci.berkeley.edu/fair-tests-a-do-it-yourself-guide/

By reading the link sent above... Read about the importance of a control group and controlling variable:

What is a control group? Why is a control group important?

What does it mean to control variables? Why should you allow this in your investigations?

Why should you repeat your investigations more than one time?

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