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1 September, 02:39

Why do we control the variables we are not investigating

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Answers (2)
  1. 1 September, 04:08
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    I believe that it is if the control works as expected, it means that has run correctly, and the results are due to the effect of the variable being tested.
  2. 1 September, 04:50
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    I believe it is because it could lead to internal validity messing up the whole experiment
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