Question

If $4x-5y+33=0$ and $20x-9y-107=0$ are two lines of regression. Find the regression coefficients $b_{yx}$

• A. $\frac{4}{5}$
• B. $\frac{2}{5}$
• C. $\frac{1}{5}$
• D. $\frac{9}{5}$

Answer 1

The correct option is A $\frac{4}{5}$

$=4x-5y=33$

$\Rightarrow y=\frac{33}{5}+\frac{4}{5}x$

so, $\Rightarrow b_{yx}=\frac{4}{5}$