@victory wrote:
The question is which is the best model to explain these two highest/lowest alpha portfolio returns
from 2011 to 2015? (Note: you should judge the model performance by goodness-of-fit
and parameter significance, not by alpha alone. Since some of these models are nested,
try to use F-tests to compare them while you can.).
The question is about examine whether portfolio alpha is still significant with more factors. I have no idea about, someone told me the output is like that. Using four model to deal with it probably.
I don't see any "goodness-of-fit" statistics. Depending on the procedure you are running to create the "model" different fit statistics are often available. Where are the suggested F-tests?
I'm not even sure that I understand what your "alpha" may be. In many modeling discussions alpha is a set level of interest for a significance test, such as alpha=0.05. So typically alpha is not dependent on or the result of a model .