The AM of 15 observations is 9 and the AM of first 9 observations is 11 and then AM of remaining observations is

CA Foundation · Quantitative Aptitude · MTP · September 2024
The AM of 15 observations is 9 and the AM of first 9 observations is 11 and then AM of remaining observations is
(A) A. 11
(B) B. 6
(C) C. 5
(D) D. 9

Suggested Answer and Working Notes:

Correct Answer: Option (A)

A. 11

Topics: Part-C: Statistics

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