Allied & ICAR Exam Bank • ALLIED_2751 NAT • 2 Marks

Section 1: Engineering Mathematics

Probability and Statistics

Subtopic: Correlation and regression analysis

Question Statement:

If the two regression coefficients are $b_{yx} = 0.8$ and $b_{xy} = 0.45$, the correlation coefficient $r$ is:

Answer Key:

0.6

Step-by-Step Solution & Explanation

$r = \sqrt{0.8 \times 0.45} = \sqrt{0.36} = 0.6$.
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