Hi all   Thanks in advance for reviewing my question.     I have panel data over 10 periods for 5000 individual customers.  I am doing a proc panel  MODEL change_in_consumption = current_income + change in previous consumption   I ran a DW test  and got the result below.      Can someone help me understand the upper and lower.  I understand the statistic 1.87  indicative of negative correlation, right? and 2.13 is vice versa.  Are these results significant?    Thanks    ... View more