Kriging assumes that the variation in a surface consists of three components, which are
A) location, attribute and time
B) distance, direction and height
C) spatial correlation, a drift and random errors
D) range, sill and nugget

Question

Quizplus · Accepted Answer

Kriging assumes that the surface variation consists of a spatial correlation (which is modeled using variograms), a trend or drift (which is modeled using a regression function), and random errors. The variogram gives information about the spatial structure of the data, the regression function captures any non-stationary trend, and the random errors take into account the stochastic variability of the data. Therefore, the correct answer is C: spatial correlation, a drift and random errors. The other options are not relevant to the components of a surface variation as taken into account by Kriging.

Kriging Assumes That the Variation in a Surface Consists of Three