If the standard deviation of the numbers 2, 3, a and 11 is 3.5, then which of the…
Mathematics · JEE Main · NTA Exams — Statistics and Probability
If the standard deviation of the numbers 2, 3, a and 11 is 3.5, then which of the following is true?
- \(3 a^{2}-26 a+55=0\)
- \(3 a^{2}-32 a+84=0\)
- \(3 a^{2}-34 a+91=0\)
- \(3 a^{2}-23 a+44=0\)
Answer
(B) 3 a^ 2 -32 a+84=0
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