The equations of two lines of regression are 4x + 3y + 7 = 0 and 3x + 4y + 8 = 0. Find the correlation coefficient between x and y.

CA Foundation · Quantitative Aptitude · MTP · January 2026
The equations of two lines of regression are 4x + 3y + 7 = 0 and 3x + 4y + 8 = 0. Find the correlation coefficient between x and y.
(A) A. -0.75
(B) B. 0.25
(C) C. -0.92
(D) D. 1.25

Suggested Answer and Working Notes:

Correct Answer: Option (A)

A. -0.75

Topics: Part-C: Statistics

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