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29 August, 15:32

Why do we control the variables we are not investigating

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  1. 29 August, 16:04
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    I believe it is because it could lead to internal validity messing up the whole experiment
  2. 29 August, 19:05
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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.
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