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JEE Mains · Maths · STD 11 - 13. statistics

यदि आंकडों \(65,68,58,44,48,45,60, \alpha, \beta, 60\) जहाँ \(\alpha>\beta\) है, के माध्य तथा प्रसरण क्रमशः \(56\) तथा \(66.2\) है, तो \(\alpha^2+\beta^2\) = ...........

  1. A \(6435\)
  2. B \(6798\)
  3. C \(6344\)
  4. D \(4312\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(6344\)

Step-by-step Solution

Detailed explanation

\( \overline{\mathrm{x}}=56 \) \( \sigma^2=66.2 \) \( \Rightarrow \frac{\alpha^2+\beta^2+25678}{10}-(56)^2=66.2 \) \( \therefore \alpha^2+\beta^2=6344\)
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