Accession Number : AD0251139

Title :   CALIBRATION OF QUALITATIVE OR QUANTITATIVE VARIABLES FOR USE IN MULTIPLE-GROUP DISCRIMINANT ANALYSIS

Corporate Author : TRAVELERS RESEARCH CENTER INC HARTFORD CT

Personal Author(s) : BRYAN, JOSEPH G.

Report Date : JAN 1961

Pagination or Media Count : 1

Abstract : Three limitations on the application of multiple discriminant analysis in certain statistical problems are discussed. These are: (1) difficulty in including qualitative antecedent variables in the analysis, (2) failure of quantitative variables to discriminate in a linear fashion, and (3) multivaluedness of antecedent variables within consequent groups. A technique for optimal assignment of numerical scale values to antecedent classes is proposed for overcoming these limitations. The technique evolves essentially as a calibration procedure. It depends only upon and exhausts all the information in the antecedent-class, consequentgroup contingency table. A straightforward procedure for carrying out the computations is outlined in detail. The problem of separate vs simultaneous calibration is resolved, and the implications of the use of calibrated variables in a screening (selection of antecedent variables) procedure examined. (Author)

Descriptors :   *STATISTICAL PROCESSES, MATRICES(MATHEMATICS), SEQUENTIAL ANALYSIS, STATISTICAL ANALYSIS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE