If two variables x and y are related by 2X + 3Y − 7 = 0 and the mean and mean deviation about mean of X are 1 and 0.3 respectively, then the…

CA Foundation · Quantitative Aptitude · RTP · May 2026
If two variables x and y are related by 2X + 3Y − 7 = 0 and the mean and mean deviation about mean of X are 1 and 0.3 respectively, then the co-efficient of mean deviation of Y about mean is.
(A) A. -5
(B) B. 4
(C) C. 12
(D) D. 50

Suggested Answer and Working Notes:

Correct Answer: Option (C)

C. 12

Topics: Part-C: Statistics

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