I am very new to ArcGIS Desktop . I am exploring some of the spatial interpolation techniques like IDW and Kriging. My query is on the cross validation part of the techniques. In the cross validation part I see a regression equation, however, I am unable to understand the specification of this equation.
As in what is the independent variable and the dependent variable of this equation?
(I do understand that cross validation is about preparing a train and test data and the idea is to predict the test data observations and compare it with its original values).