1. A method for analyzing an electrocardiograph heart signal comprising the steps of: (a) establishing a group median heart vector for a selected time increment based upon individual heart vectors of a sample of a specified grouping of persons, the group median heart vector having a digitized value; (b) establishing a distribution of individual heart vectors for the selected time increment of the specified grouping of persons upon which a means of dispersion boundary is derived; (c) producing a digitized signal of at least two leads from an electrocardiograph of a patient corresponding to the selected time increment; (d) deriving a patient heart vector for the digitized signal; (e) deriving a vector of deviation corresponding to the selected time increment based on the derived patient heart vector and the group median heart vector; and (f) deriving a vector of abnormality for the selected time increment having a point of origin at the selected percentile boundary of the distribution of individual heart vectors.