I have recently graduated and want to review some stats topics to prepare for interviews. I was wondering whether there is a good book or some other resource to review linear regression. E.g., I would want to review all the assumptions underlying OLS, and what to do in case an assumption does not hold in practice.
Example: let's say the residuals didn't have an expected mean of zero, what could be the issue? How would you fix it?
I would like to read up on all this stuff again, but do not really know what the most efficient way is to do so. Does anyone know a document or an easy to go through book to review all this stuff?