I have a data set with only 47 soundings, so a small amount of data available. With this information I am trying to produce a raster surface through interpolation. Unfortunately, a data analysis showed that my data is not autocorrelated. So I chose a multivariate approach with the Geostatistical Analyst: Co-Kriging.
Now I am wondering if it is necessary to create a subset before doing the interpolation, because as far as I understand, the crossvalidation which can be done with the Geostatistical Analyst applies the leave-one-out technique. This means I can use the whole data set and still validate the results appropriately, right?