In a set of 10 numbers, the mean of the first 6 is 15 and the mean of the remaining 4 is 20. The combined mean is: MCQ with Answer and Explanation

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In a set of 10 numbers, the mean of the first 6 is 15 and the mean of the remaining 4 is 20. The combined mean is:

A. 17

B. 17.5

C. 16.5

D. 18

Answer: Option A

Solution (By JKExamLibrary)

Sum = 6×15 + 4×20 = 90+80=170. Combined mean = 170/10 = 17.

This question belongs to: Accountancy and Statistics Statistics

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B. Scatter diagram

C. Ogive (Cumulative Frequency Curve)

D. Histogram

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