Researcher usually control unwanted variable by______ A. choosing their subject carefully B. elimination them through environmental...
Researcher usually control unwanted variable by______ A. choosing their subject carefully B. elimination them through environmental regulation. C.cancelling their effect by using control group. D. None of the above. E All of the Above.
Homework Answers
Option C is correct
- The subject choosen carefully is from the availability from environment which may not be exactly controlled one so option A can not be perfect
- Elimination them through environmental regulation will depend upon the variable choosen by nature itself. so option B can not be considered.
- Cancelling their effect by using control group can control the desired variable as required so option C is more correct.
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Researcher usually control unwanted variable by______
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