1. A statistical analysis system for use with a communication facility including remote terminal apparatus for individual callers, wherein said remote terminal apparatus may comprise a conventional telephone instrument including voice communication means, and digital input means in the form of an array of alphabetic numeric buttons for providing identification and statistical data, said control system comprising: interface means coupled to said communication facility to interface said terminal apparatus for voice and digital communication and including means to provide signal values from data developed by said terminal apparatus said interface means further including a consumable key test means to qualify callers with respect to limited use; voice generator means coupled through said interface means for actuating said terminal apparatus as to provide vocal operating instructions to an individual caller; and means connected to said interface means for processing said statistical data as to isolate a subset of said individual callers.