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18 May, 05:30

Why is controlled experiment valuable to a scientist?

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  1. 18 May, 07:10
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    A researcher must only measure one variable at a time, and using a scientific control group gives reliable baseline data to compare their results with. For example, a medical study will use two groups, giving one set of patients the real medicine and the other a placebo, in order to rule out the placebo effect.
  2. 18 May, 07:46
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    A control is an additional experiment you run alongside your test experiment. It is identical in every way to your test experiment,
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