Hi Rick, sorry to disturb you. My question also about the same log transformation and negative value calculation. I am using GDPr as my dependent variable but there is one negative value which is effecting my significance result which cannot be log transformed and also I transformed all my data in the independent variable into log. My negatuve value is -1.679, it was on the year 2009 which is just after GFC-2008. How can I make it work (small change or constant) for still getting significance? Your reply will be highly appreciated....