The sum of mean and SD of a series is a + b, if we add 2 to each observation of the series then the sum of mean and SD is :

CA Foundation · Quantitative Aptitude · MTP · May 2026
The sum of mean and SD of a series is a + b, if we add 2 to each observation of the series then the sum of mean and SD is :
(A) A. a + b + 2
(B) B. 6 - a + b
(C) C. 4 + a - b
(D) D. a + b + 4

Suggested Answer and Working Notes:

Correct Answer: Option (A)

A. a + b + 2

Topics: Part-C: Statistics

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