PEC EPE Mining Practice Questions - PEC Engineering Practice Examination - Mining Engineering (Part-II) Exam

Five borehole grades (%) are 1.2, 1.4, 1.6, 1.8, 2.0. Sample standard deviation (n−1) is closest to:

0.32% 0.28% 0.40% 0.20%

Correct Answer:

0.32%

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