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Question 1
In spatial geostatistics, what does the experimental variogram gamma(h) measure for a sample pair separation distance (lag) h?
Correct Answer:
One-half of the average squared difference between sample values separated by distance h
Question 2
Which component of a variogram model represents unresolvable micro-scale grade variation and measurement errors?
Correct Answer:
Nugget effect (C0)
Question 3
An evaluator calculates a block variance (BV) of 4,000 (cm.g/t)^2 and an Ordinary Kriging variance (KV) of 1,000 (cm.g/t)^2 for a selective mining unit (SMU). What is the Kriging Efficiency (KE)?
Correct Answer:
75.0%
Question 4
Why is a Lagrange multiplier (mu) introduced into the system of linear equations for Ordinary Kriging?
Correct Answer:
To minimize the variance of estimation while ensuring the kriging weights sum to 1.0 (unbiasedness constraint)
Question 5
In a spherical variogram model gamma(h) = C0 + C * [1.5(h/a) - 0.5(h/a)^3] for h
Correct Answer:
gamma(h) equals the total sill (C0 + C) and remains constant for all h > a
Question 1
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About this Exam

Prepare with the Advanced Mine Valuation Certificate Exam Practice Questions - Advanced Certificate in Mine Valuation (South Africa) Exam practice quiz. This question bank includes 100 questions covering stope, gold, grade, kriging, and width. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Advanced Mine Valuation Certificate Exam Practice Questions - Advanced Certificate in Mine Valuation (South Africa) Exam

This practice set contains 100 questions from the matching question bank and focuses on stope, gold, grade, kriging, and width. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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