If the standard deviation of x is 4, what will be the standard deviation of 3x-7?

CA Foundation · Quantitative Aptitude · MTP · September 2026
If the standard deviation of x is 4, what will be the standard deviation of 3x-7?
(A) A. 4
(B) B. 7
(C) C. 12
(D) D. 21

Suggested Answer and Working Notes:

Correct Answer: Option (C)

C. 12

Topics: Part-C: Statistics

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