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20 August, 15:13

Why is it important to alter only one variable at a time when designing and experiment?

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  1. 20 August, 15:53
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    Answer: A variable within a scientific experiment is something that is changed (i. e. it varies). There should be only one manipulated variable within a scientific experiment so that the experimenter can be certain it is this variable which causes a pattern in the resultant data, if any exists at all.
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