ABSTRACT
If two or more random variables in a general population are of interest, they are interdependent stochastically and if an appropriately rich sample is taken, we can try to find an analytical formula of a functional nature that describes this interdependence well. This problem is extremely important in many engineering areas and mining engineering is no exception to this rule. This problem has had a very rich literature for many years and is still under development. In this chapter some elementary information as well as some connections with mine practice will be provided.
