Hi
I have attached a question and need help. Could someone tell me what I'm supposed to type into the equation box for these three models I need to estimate. I'm not sure what I'm supposed to do here. Ive also attached the variables I have in my workfile.
Any help is appreciated
Regards
Winston
Estimating 3 Models in eViews: What to put in the equation box?
Moderators: EViews Gareth, EViews Moderator
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Estimating 3 Models in eViews: What to put in the equation box?
- Attachments
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- varwork.PNG (2.88 KiB) Viewed 7037 times
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- q11est.PNG (35.71 KiB) Viewed 7039 times
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- Non-normality and collinearity are NOT problems!
- Posts: 3775
- Joined: Wed Sep 17, 2008 2:25 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
Nothing wrong with telling us what you've done and where you're stuck, but this isn't the place to ask people to do your homework for you.
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- Posts: 8
- Joined: Fri May 01, 2020 8:41 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
I think I already figured it out:
Model 1: spread c ar(1) ma (1)
Model 2: spread c ar(1) ar(2)
Model 3: spread c ar(1) ar(2) ar(3)
I figured out that the best model according to both criteria is the ARMA(1,1) model or Model 1.
I'm not sure what it means by "comment on the significance of the coefficients." Could you please help me out with that?
Thanks
Model 1: spread c ar(1) ma (1)
Model 2: spread c ar(1) ar(2)
Model 3: spread c ar(1) ar(2) ar(3)
I figured out that the best model according to both criteria is the ARMA(1,1) model or Model 1.
I'm not sure what it means by "comment on the significance of the coefficients." Could you please help me out with that?
Thanks
-
- Non-normality and collinearity are NOT problems!
- Posts: 3775
- Joined: Wed Sep 17, 2008 2:25 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
Think of doing a hypothesis test on whether the coefficients equal zero. Would you reject at the 10% level? The 5% level?
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- Posts: 8
- Joined: Fri May 01, 2020 8:41 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
So would you just do an F-test? What would you put in the equation box for that?
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- Non-normality and collinearity are NOT problems!
- Posts: 3775
- Joined: Wed Sep 17, 2008 2:25 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
Probably t-tests, although there is nothing wrong with F-tests.
You might want to spend an evening with the first few chapters of https://www.eviews.com/illustrated/illustrated.html
You might want to spend an evening with the first few chapters of https://www.eviews.com/illustrated/illustrated.html
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- Posts: 8
- Joined: Fri May 01, 2020 8:41 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
So I just did a Wald Test and set c(2)=0, c(3)=0 etc. Is that the right thing to do? Then you reject the null hypothesis if the p-value is between 0-5%?
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- Non-normality and collinearity are NOT problems!
- Posts: 3775
- Joined: Wed Sep 17, 2008 2:25 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
Yes, that's the way to test the hypothesis that both coefficients equal zero.
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- Posts: 8
- Joined: Fri May 01, 2020 8:41 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
And if you reject the null hypothesis, then you conclude that the coefficients are statistically significant at the 5% level right?
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- Posts: 8
- Joined: Fri May 01, 2020 8:41 pm
Re: Estimating 3 Models in eViews: What to put in the equation box?
I also needed help with the following questions.
For Q5, I concluded that the coefficient of Beta1 was not significant at the 5% level. I'm not sure what it means by "How do you interpret this result?" What is it asking for there and can you help?
Also for Q7, i concluded that there was heteroscedasticity for both regressions. I'm not sure what the final part of the question is asking in regards to how any conclusions would change. Could you help me out with that?
Thanks a lot
For Q5, I concluded that the coefficient of Beta1 was not significant at the 5% level. I'm not sure what it means by "How do you interpret this result?" What is it asking for there and can you help?
Also for Q7, i concluded that there was heteroscedasticity for both regressions. I'm not sure what the final part of the question is asking in regards to how any conclusions would change. Could you help me out with that?
Thanks a lot
- Attachments
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- q7ass.PNG (17.87 KiB) Viewed 6841 times
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- q5ass.PNG (12.22 KiB) Viewed 6841 times
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