Standard deviation of first n natural number is 2. What is the value of n?

CA Foundation · Quantitative Aptitude · RTP · January 2025
Standard deviation of first n natural number is 2. What is the value of n?
(A) A. 7
(B) B. 6
(C) C. 5
(D) D. 8

Suggested Answer and Working Notes:

Correct Answer: Option (A)

A. 7

Topics: Part-C: Statistics

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