In a series of 2n observations half of them equal 'a' and remaining equal '-a'. if the…
Mathematics · JEE Main · NTA Exams — Statistics and Probability
In a series of 2n observations half of them equal 'a' and remaining equal '-a'. if the standard deviation of the observation is 2, then |a| equals to
- \(\frac{1}{n}\)
- \(\sqrt{2}\)
- 2
- \(\frac{\sqrt{2}}{n}\)
Answer
(C) 2
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