PEC EPE Metallurgical Practice Questions - PEC Engineering Practice Examination - Materials & Metallurgical Engineering (Part-II) Exam

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A hardness sample of five readings (HV) is 180, 190, 200, 210, 220. What is the sample standard deviation (n−1 denominator)?

15.8 HV 14.1 HV 20.0 HV 10.0 HV

Correct Answer:

15.8 HV

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