MicrOsiris - Version 9.0 MicrOsiris is a comprehensive statistical and data management package for Windows based microcomputer systems. It is derived from OSIRIS IV, a statistical and data management package developed and used at the University of Michigan.Developed for serious survey analysis using moderate to large data sets, MicrOsiris's speed and minimal disk storage requirement, coupled with the menu and on-line help systems, make it also suitable for college or graduate level courses in statistics and applied survey research methods. Further, the interactive statistical decision tree for choosing appropriate statistical techniques is a comprehensive decision tool---not just for using MicrOsiris.