Engle Granger Vs adf test on residuals

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Elghark
Posts: 2
Joined: Tue Jul 05, 2016 12:44 am

Engle Granger Vs adf test on residuals

Postby Elghark » Tue Jul 05, 2016 12:58 am

Hi everyone, this is my very first post, so in case of any mistake i apologize in advance.
This is my problem: i was making some analysis on a currency pairs in order to develop a pairs trading strategy. I was pretty sure about the fact that the following two procedures were the same:
1)make a two step engle granger test by click ing the eviews test
2) i personally made the ols equation of the two currencies and once saved the residuals, I made the adf test on these.
However my results lead to two opposite directions: the first procedure shows no cointegration while the second show stationarity of residuals. Doesn't it mean they are cointegrated?

dakila
Posts: 489
Joined: Tue Nov 24, 2015 4:57 pm

Re: Engle Granger Vs adf test on residuals

Postby dakila » Tue Jul 05, 2016 1:33 am

If you want to use procedure 2 you should use EG critical values. Because of generated residuals, you should different c.v table from ADF test c.v table.

Elghark
Posts: 2
Joined: Tue Jul 05, 2016 12:44 am

Re: Engle Granger Vs adf test on residuals

Postby Elghark » Tue Jul 05, 2016 6:26 am

Thanks for your reply. To be honest I was suspicious about the very same reason. Now you confirmed it.
I downloaded both ADF and Engle Granger Tables for critical values and in fact I now see significant differencies.
Maybe I was just disappointed for tests not confirming my hopes of cointegration between EurJpY vs ChfJpY......just have to look for another good idea :mrgreen:

Thanks again


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