1. A system for evaluating tradeoff between a statistical parameter and performance for an electrical circuit design (ECD), the system comprising: a candidate generator for providing specification candidate vectors for the ECD, each specification candidate vector having a plurality of performance specifications of the ECD; a performance estimator for providing performance vectors for the ECD, each performance vector having a plurality of performance values of the ECD, each performance value having a counterpart performance specification; a statistical estimator for receiving the specification candidate vectors and the performance vectors, and for calculating the statistical parameter for at least one specification candidate vector in accordance with pre-determined calculations based on the at least one specification candidate vector and the performance vectors; a filter for receiving the at least one specification candidate vector and its respective statistical parameter, and for filtering the at least one specification candidate vector in accordance with pre-determined criteria to produce at least one filtered specification candidate vector with its respective statistical parameter; and a display system for visually representing the at least one filtered specification candidate vector and its respective statistical parameter.