WRES ve PRED plots

From:"Rajeev Menon" Subject: [NMusers] WRES ve PRED plots Date:Thu, 27 Mar 2003 11:48:45 -0500 I am working on a data set. Its a rich data set and I am using an ADVAN 4 TRANS 1 model with METHOD =1 INTERACTION. The model minimizes and the estimates are good. It also gives me the covariance matrix. However the WRES vs PRED plots show a cone shaped pattern. My error syntax is $ ERROR IPRED=F IRES=DV-IPRED IWRES=IRES/F Y = F+F*(ERR(1)) + ERR(2) Taking out the additive error does not have a significant impact. Taking out the proportional error does not work. Could you help me to understand what's happening here. Thanks, Rajeev