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28 August, 20:15

How many independent variables can be tested in a standard scientific experiment?

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  1. 28 August, 21:42
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    The only way to test a particular variable for sure is to leave all other variables constant, and if a change in ONE variable creates an overall change, then you know that that variable caused it. But if you change 2 variables, and something changes, you don't know which one changed it for sure.
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