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Prateek Asked :

04-10-2021 Total Quality Management

Q. If the diameter of a shaft is measured as 60 mm, 62 mm, 63 mm, 61 mm, 60 mm. What is the mean diameter that can be considered for calculation?

A. 61.1 mm
B. 61.2 mm
C. 61.3 mm
D. 61.4 mm

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Dapzoi Verified
Commented on 2021-10-04 16:30:24 (IST)
Answer: B

Explanation: The mean is calculated as the sum of observed values divided by the number of observed values. The sum of the observed values is 306. The number of observed values is 5. Therefore, the mean diameter of the shaft is 306/5=61.2 mm.