Question

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

• A. $0.36$
• B. $0.2$
• C. $0.6$
• D. $0.9$

Answer 1

The correct option is C $0.6$

$Given{b}_{xy}=0.2b_{yx}=0.8r=\sqrt{b_{xy}\times b_{yx}}r=\sqrt{0.36}r=0.6$

Where r is coefficient of correlation.