Hi Everyone,   I am a new user, currently completing panel regression analysis for a university paper. The data I am using is a sample taken from the US Panel Study of Income Dynamics (PSID), with 23 variables and ~220k observations.   When I run a simple panel model, such as below, I do not get the observation plots, and the colored set of residual plots seem incomprehensible. Is it simply a case of so many observations making the plots over-complicated? Are these plots "normal" for proc panel, and if so how do I interpret them?   Thank you for any advice.   proc panel data=data plots=ALL; id year id; model ARSINH_wealth = pd age male white black hispanic otherrace education income employed divorce marriage childbirth familydeath laidoff missedwork studentloan collegedegree ARSINH_socioeconomic / pooled; title 'Model One - Pooled (OLS) Model (negative)'; run;       This question was originally posted to 'New Users' but I was advised to post it here instead. ... View more