Search found 5 matches

by vtov
Sat Apr 28, 2012 10:51 pm
Forum: Econometric Discussions
Topic: Regression help please!!
Replies: 2
Views: 3671

Re: Regression help please!!

Yes it is possible but interpretation of coeffs might differ than what you'd expect. Say you have a model of y=0.5 log_x + e. What this means is that 1 unit increase of y explains 0.5% increase of x. But I might be wrong. Check J Woolridge (2002)
by vtov
Thu Apr 26, 2012 9:13 am
Forum: Econometric Discussions
Topic: Johansen. Need some help here
Replies: 1
Views: 3248

Re: Johansen. Need some help here

Yes there's three CE. Lucky you both results did not conflict. Anyway, what seems suspicious is your choice of lag length. Its bit too small relative to your sample size (3300). I recommend doing some diagnostics on VAR(5) to see any residual autocorrelation. Johansen Test is sensitive to underspeci...
by vtov
Thu Apr 26, 2012 8:03 am
Forum: Econometric Discussions
Topic: Confused About Simple VAR LM Test
Replies: 5
Views: 14126

Confused About Simple VAR LM Test

VAR Residual Serial Correlation LM Tests Null Hypothesis: no serial correlation at lag order h Date: 04/26/12 Time: 15:57 Sample: 1961M01 2010M12 Included observations: 594 Lags LM-Stat Prob 1 33.80490 0.1121 2 31.13447 0.1846 3 53.37381 0.0008 4 51.58304 0.0014 5 33.08849 0.1289 6 33.04551 0.1299 7...
by vtov
Sat Apr 21, 2012 10:32 pm
Forum: Econometric Discussions
Topic: Weird Johansen Test Result
Replies: 1
Views: 3015

Re: Weird Johansen Test Result

Its okay, I got it. For future reference for others facing the same problem, when this happens, it means that none of the variables have stochastic trend, in which case either you recheck stationarity of your variables or if your variables are confirmed I(1) i.e in theory in cases such as stock pric...
by vtov
Sat Apr 21, 2012 9:54 pm
Forum: Econometric Discussions
Topic: Weird Johansen Test Result
Replies: 1
Views: 3015

Weird Johansen Test Result

Hi all, I need help in figuring out the weird result I have gotten from Johansen Test. It seems that after running the test for 5 variables, the trace test indicated 5 Coint. Eq. which doesn't make sense. Is this a telltale sign that something is wrong eg model misspecification, lag selection etc......

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