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Why is it important to have a control group in an experimental investigation? ​
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Why is it important to have a control group in an experimental investigation?
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User David Chouinard
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Answer:to see how it effects

Step-by-step explanation:

User Machzqcq
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a control group provides a baseline for the experiment, shows how the independent variable influenced the experiment and influenced the outcome. a control group provides a comparison for the experiment

User Peymankh
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