Who has heard of Kulczynski's quantitative symmetric measure. Not finding a lot yet in my online search. It was suggested as a possible measure for some genetic data we are generating. Thank you. Bill Shannon, PhD Associate Professor of Biostatistics in Medicine Washington University School of Medicine St. Louis, MO 314-454-8356 [log in to unmask]<mailto:[log in to unmask]> ---------------------------------------------- CLASS-L list. Instructions: http://www.classification-society.org/csna/lists.html#class-l