1. A tangible computer-readable medium having recorded thereon statements and instructions for execution by a computer of a method for visualizing data associated with an electrical circuit design (ECD), the ECD having associated therewith circuit design variables and circuit performance metrics, the method comprising steps of: accessing a database containing circuit simulation data of the ECD, the circuit simulation data including circuit design variables data and circuit performance metrics data; extracting circuit simulation data to obtain extracted data; processing the extracted data in accordance with a pre-determined data-mining algorithm to obtain output data, the output data correlating at least one of: (a) a design variable to a circuit performance metric; and (b) a first performance metric to a second performance metric; organizing the output data in accordance with pre-determined display criteria to obtain organized data; and displaying the organized data; wherein processing the extracted data includes forming a classification and regression tree (CART), the CART mapping at least one circuit variable to one of the circuit performance metrics.