CHI(2) ANALYSIS OF SUPERSYMMETRIC MODELS

We discuss the results of a global fit to precision data in supersymme tric models. We consider both gravity- and gauge-mediated models. As t he superpartner spectrum becomes light, the global fit to the data typ ically results in larger values of chi(2). We indicate the regions of parameter space which are excluded by the data. We discuss the additio nal effect of the B(B --> X-s gamma) measurement. Our analysis exclude s chargino masses below M-z in the simplest gauge-mediated model with mu > 0, With stronger constraints for larger values of tan beta.