Explain the Correlation Matrix tool used in Crystal Ball.

In Crystal Ball each random input variable is assumed to be independent of the others; that is,random variates are sampled independently from each assumption distribution during the course of the simulation.In many situations,this is not realistic because assumptions would naturally be related to one another,and we would want to explicitly model such dependencies between variables.The Correlation Matrix tool allows you to define correlations between groups of assumptions in a model.