Question

In reserve estimation, what does the term “kriging” primarily refer to in geostatistics?

• A. A method of random sampling
• B. A weighted least-squares interpolation technique that provides the Best Linear Unbiased Estimator (BLUE)
• C. A graphical method for plotting ore contours
• D. A variance reduction technique using histograms

Hint:

Remember: \[ \boxed{ \text{Kriging}= \text{Best Linear Unbiased Estimator (BLUE).} } \]

Answer 1

The Correct Option is B

Step 1: Recall the definition of kriging. Kriging is a geostatistical interpolation technique used to estimate unknown values from nearby sampled data while accounting for spatial correlation.

Step 2: State its statistical property. Kriging determines optimal weights using the variogram and produces the \[ \boxed{\text{Best Linear Unbiased Estimator (BLUE).}} \] Hence, \[ \boxed{\text{A weighted least-squares interpolation technique that provides the BLUE}} \] is the correct answer. Therefore, \[ \boxed{(B)} \] is the correct answer.