I find a standard eviews result from an article, which as follows:
Dependent Variable: RATES
Method: Least Squares
Date: 12/03/12 Time: 14:09
Sample: 1961Q1 1986Q3
Included observations: 103
HAC standard errors & covariance (Prewhitening with lags = 1,
Quadratic-Spectral kernel, Andrews bandwidth = 1.9610)
Variable Coefficient Std. Error t-Statistic Prob.
C 1.375142 0.599818 2.292600 0.0239
R-squared 0.000000 Mean dependent var 1.375142
Adjusted R-squared 0.000000 S.D. dependent var 3.451231
S.E. of regression 3.451231 Akaike info criterion 5.325001
Sum squared resid 1214.922 Schwarz criterion 5.350580
Log likelihood -273.2375 Hannan-Quinn criter. 5.335361
Durbin-Watson stat 0.745429
My eviews result as follows:
Dependent Variable: PEMA_W
Method: Least Squares
Date: 05/12/14 Time: 22:59
Sample: 5/13/2013 5/05/2014
Included observations: 247
HAC standard errors & covariance (Bartlett kernel, User bandwidth =
8.0000)
Variable Coefficient Std. Error t-Statistic Prob.
C 772.7935 232.9400 3.317565 0.0010
SEMA_W 157.8913 38.04165 4.150486 0.0000
R-squared 0.143515 Mean dependent var 1749.567
Adjusted R-squared 0.140019 S.D. dependent var 86.53615
S.E. of regression 80.24943 Akaike info criterion 11.61622
Sum squared resid 1577793. Schwarz criterion 11.64464
Log likelihood -1432.603 Hannan-Quinn criter. 11.62766
F-statistic 41.05288 Durbin-Watson stat 0.049852
Prob(F-statistic) 0.000000 Wald F-statistic 17.22653
Prob(Wald F-statistic) 0.000046
I have two questions:
(i) why are the two eviews results different by using the same method (focusing on the parts of the underlined and bold)? How could I get the standard result as the article result shown by running eviews?
(ii) I use this eviews method in order to remedy auto-correlation, but my eviews result does not seem to be useful to remedy auto-correlation. How could I reach my goal by using eviews?
Thank you very much!
Hope your response asap!
About Newey-west (HAC) results
Moderators: EViews Gareth, EViews Moderator
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EViews Glenn
- EViews Developer
- Posts: 2682
- Joined: Wed Oct 15, 2008 9:17 am
Re: About Newey-west (HAC) results
HAC computation doesn't remove autocorrelation. It corrects standard errors for heteroskedasticity and autocorrelation.
You need to set the HAC settings to match. Click on the HAC options button.
You need to set the HAC settings to match. Click on the HAC options button.
Re: About Newey-west (HAC) results
I click the estimation first, and click the option, then choose the coefficient covariance matrix to HAC, then do the estimate, but from the result as i show you yesterday, i cannot get the same result as the 1st result from the article, specifically speaking, the black sentences are different in the two results, i wanna know how to get the first one.
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EViews Glenn
- EViews Developer
- Posts: 2682
- Joined: Wed Oct 15, 2008 9:17 am
Re: About Newey-west (HAC) results
Once you choose HAC as your covariance method, there will be a HAC options button that you have to press which brings up another dialog. You'll have to set the options to match the results you wish to match. You are using a different kernel and bandwidth, and the results you are trying to match also do prewhitening.
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