DV vs PRED: a question

From: michael_looby@sandwich.pfizer.com Subject: DV vs PRED: a question Date: Tue, 2 Feb 1999 16:22:25 -0000 This is an intriguing discussion! I have naively used PRED vs DV plots with a regression line superposed as a simple visual aid to examine goodness-of-fit. Following Mats' email, I have looked back over some plots and notice that DV Vs PRED plots generally correspond well to the line of identity but the PRED vs DV plots have a smaller slope, i.e. above the identity line as smaller values and below it at high values. My question is whether this will always be the case? Regards Mick Looby