Briefs

Feb 24, 2003. Richmond, CA: Systat Software Inc., a leading developer and supplier of statistical and data analysis tools, has released SYSTAT version 10.2. Recognized as one of the finest desktop statistical programs available, it combines a vast selection of reliable and mathematically sound statistical tests with extensive technical graphs.

SYSTAT Version 10.2 has expanded its regression suite by including rank and ridge regression routines. Rank regression is a non-parametric technique that estimates regression coefficients by minimizing a certain ranked-residual-weighted sum of absolute values of residuals; it is useful when the usual assumptions of regression analysis are not tenable. Ridge regression is used in Bayesian contexts and in situations of multicollinearity, by modifying the method of least squares to produce shrunken and biased estimators of regression coefficients.

SYSTAT, an award winning scientific data analysis software for technical professionals, was recently acquired by Systat Software Inc. from SPSS Science (a unit of SPSS Inc.), along with other scientific products.

For more information, see www.systat.com