For our foray into geostatistics we got data that consists of measurements taken from the soil. The dataset has like concentrations of various different minerals.
We were divided into a number of groups that try to explore different types and methods of interpolation. We got saddled with kriging, more specifically something called "5th order kriging". Which for some reason I can't find any documentation or explanation on.
What the heck is 5th order kriging? All I got was simple, ordinary, and universal kriging (or kriging with a trend)... and something or other. Can anybody point me to some resources?