The arithmetic mean and coefficient of variation of a data set are 20 and 25 respectively. The variance of 5+3x is:

CA Foundation · Quantitative Aptitude · MTP · September 2026
The arithmetic mean and coefficient of variation of a data set are 20 and 25 respectively. The variance of 5+3x is:
(A) A. 225
(B) B. 180
(C) C. 144
(D) D. 81

Suggested Answer and Working Notes:

Correct Answer: Option (A)

A. 225

Topics: Part-A: Business Mathematics, Part-C: Statistics

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