OCT A: A Program for the Log-Linear Analysis of Multidimensional Contingency Tables.Reviewed by Gerard E. Dallal;Wuba-Wuba: Ascii Files to Mystat/Systat Files.Reviewed by Gerard E. Dallal;MLIB: A Statistical Computing Library for the IBM-PC.Reviewed by Michael Conlon;Matrix Calculator and Stepwise Interactive Regression Programs.Reviewed by David L. Turner;NTSYS-pc: Microcomputer Programs for Numerical Taxonomy and Multivariate Analysis.Reviewed by F. James Rohlf;QNumQ: Software for Numbering Questions, Data Processing Fields, and Skip Patterns on Questionnaires.Reviewed by Bob S. Hodges III Polygm: Estimation of Parameters of a Second-Degree Polynomial Model Under Intraclass Correlation Structure and Arbitrarily Missing Observations. Reviewed by Anand K. Seth;Preview: A Computer Model to Project Cost of Lifestyle-Related Illnesses and Savings From Worksite Health Promotion.Reviewed by Laura C. Leviton;Hompro: A Program to Test the Homogeneity of a Set of Proportions.Reviewed by Dwight D. Harley;Mystat: A Personal Version of SYSTAT.Reviewed by Leland Wilkinson;ECPSES: Estimating Critical Population Size in the Presence of Environmental Stochasticity.Reviewed by Charles J. Mode