countrygirlred
countrygirlred countrygirlred
  • 14-09-2020
  • Chemistry
contestada

Explain why you need a control group

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lblodgett08
lblodgett08 lblodgett08
  • 16-09-2020

Answer: You need a control group because......

Explanation:  You need a control group in order to study if there is any difference in behavior between two groups when an external stimulant is introduced.  

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