Error:URL using bad/illegal format or missing URL Summaryofr(ands Plusadetaileddiscussionoftheuseofrformodelsforcategoricaldataisavailableon Lineinthefreemanualpreparedbylaurathompsontoaccompanyagresti(2002).alinktothismanualisatwww.stat.u.edu/a - PowerPoint Presentations and PDF Documents