The Student Room Group

Comparing to linear regression models.

So I've been give two sets of data and I was told to build a regression model and decide on which one I think is the best model.

I've created the model and I've done:
Test for the population regression model (H0 : β1=0
H1 : β1≠ 0. In both cases I've rejected the null hypothesis).
Test for zero population correlation and (H0 : ρ=0
H1 : ρ≠ 0. H0 was accepted for both)
Testing the significance of R2: the F-test (H0 : R2=0
H1 : R2> 0 and accepted H0 for both).

So then I looked at the results and I saw that with my second regression model I was closer to accept and reject the first two hypothesis (that wasn't the case with the last test).
So I decided that my second model is the best model.

Have I been approaching this question correctly or have I been overcomplicating it.

Are there any other ways to approach it?
Hi there,

While you're waiting for an answer, did you know we have 300,000 study resources that could answer your question in TSR's Learn together section?

We have everything from Teacher Marked Essays to Mindmaps and Quizzes to help you with your work. Take a look around.

If you're stuck on how to get started, try creating some resources. It's free to do and can help breakdown tough topics into manageable chunks. Get creating now.

Thanks!

Not sure what all of this is about? Head here to find out more.

Quick Reply

Latest