Q270 / 270 · NDA 2017 (Phase 2) · Mathematics

The coefficient of correlation when coefficients of regression are 0.2 and 1.8 is

  • A
    $0.36$
  • B
    $0.2$
  • Correct answer
    C
    $0.6$
  • D
    $0.9$

Solution

$\begin{aligned} & \text { Coefficient of correlation }=\sqrt{0.2 \times 1.8} \\ & =\sqrt{0.36}=0.6\end{aligned}$

Hence, the correct answer is option: 'C'.

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