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Metallurgical Engineering · Q163

Miscellaneous in Metallurgy

Engineering and GATE · Metallurgical Engineering · question 163

Q163

A large set of data for a given measurement has been found to be normally distributed around a mean 'μ' with standard deviation 'σ'. Which of the following limits would have about 95% of the data points around the mean and rest outside?

A.
μ - 0.5σ and μ + 0.5σ
B.
μ - σ and μ + σ
C.
μ - 2σ and μ + 2σ
Answer
D.
μ - 3σ and μ + 3σ

Answer: Option C

Solution

Answer: Option C
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