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How many variables are altered in a good experiment? A.1 B.0 C.2 D.3
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How many variables are altered in a good experiment? A.1 B.0 C.2 D.3

User Nonsensickle
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A.1 is correct because only one thing is changing and if you would change more it wouldn’t be as easy to get your data
User Jaredzhang
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Hey!
The correct answer is A.1. We know this because any good and controlled experiment will only be successful if one thing and one thing only changes. If there were two or more variables changing, then it’d be hard to collect accurate data and correct/confirm the hypothesis.
I hope I helped!
User Stelonix
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