The Mean of a set of 20 observations on 18.3. The mean is reduced by 0.6 when a new observation is added to the set. The new observation is:

CA Foundation · Quantitative Aptitude · MTP · September 2024
The Mean of a set of 20 observations on 18.3. The mean is reduced by 0.6 when a new observation is added to the set. The new observation is:
(A) A. 17.6
(B) B. 18.0
(C) C. 5.7
(D) D. 24.6

Suggested Answer and Working Notes:

Correct Answer: Option (C)

C. 5.7

Topics: Part-A: Business Mathematics

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