topic Re: use model to explain in All Things Community

use model to explain

victory — Mon, 07 Nov 2022 03:44:39 GMT

i am a novice at sas. Examine whether the portfolio alpha is still significant with more factors. The question: Which is the best model to explain these two highest/lowest alpha portfolio returns. I have the data. use four models, and which four models? How can i get the output like photo。 thanks all.

Re: use model to explain

PaigeMiller — Sun, 06 Nov 2022 20:41:42 GMT

I don't understand anything about your screen capture from Excel. Can you please explain what we are seeing so that we can understand it?

Next, what does this have to do with SAS?

Re: use model to explain

victory — Mon, 07 Nov 2022 03:51:19 GMT

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.

Re: use model to explain

PaigeMiller — Mon, 07 Nov 2022 10:41:12 GMT

What are the numbers? What is the red cell?

Re: use model to explain

ballardw — Mon, 07 Nov 2022 16:19:30 GMT

@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 .