Hi;
Before I put a Gretl's example. Data set which I study is monthly. I have
101 observations and, if I apply the Johansen's tests in it, I obtain
following output:
Rank Eigenvalue trace p-value l-max p-value
0 0.11637 13.736 0.3151 11.01 0.2600
1 0.030163 2.7258 0.6392 2.7258 0.6380
Then I question to my self: if two hypothesis are accepted, why we must
conclude that there aren't any cointegration relationships??? To conclude
that I think we have to interpretate sequently, that is, starting with the
less rank, the first rank we accept it will be the rank of cointegration,
won´t it? In this case rank zero, doesn´t it?
If the null hypothesis in L-max were that there are exactly "r0" ( and no
r<=r0 as the trace test)) cointegration vectors, it would impossible the
interpretation, because the rank would be, at the same time, zero and one.
In a lot of articles there is that distintion between both tests.
I continue thinking that this isn't very clear in Gretl
Cheerssssss and thanksss
Javi