This work reviews the the Empirical Covariance (CE) and Variogram (VAR) functions, related to (LSC) and Kriging Process. The paper aims get easier the learning of the LSC and Kriging showing cartographic problems when using techniques. It must rememebered LSC and kriging are used in analysis, interpolation/extrapolation of data in Geoscience and can be separated in two steps: 1) carring out the CE or VAR and 2) adjustment of those functions, usually by least squares adjustment (LSA) for predictioning. This work is focused in define Empirical Covariance and Variogram functions from original definitions with examples and points of view of authors. As application, the authors intend show differences in using geodetic reference systems and projection systems for h computation. The exposure of the coefficients adjusted by the LSA clearly shows the different responses. A last, it is suggested important observations to avoid errors in CE and VAR generation.