Re: [Gretl-users] 2SLS

Dear Allin, thanks for the answer. I tried to do the tsls and now it works but it only gives me one equation. What if i wanted both the equations of the system, could you tell me a procedure? Then i have to make a 3sls , in this last case what is the syntax to use? Thanks very much GM -------------------------------------------------- From: "Allin Cottrell" <cottrell(a)wfu.edu&gt; Sent: Sunday, March 15, 2009 12:25 AM To: "Gretl list" <gretl-users(a)lists.wfu.edu&gt; Subject: Re: [Gretl-users] 2SLS > On Sat, 14 Mar 2009, Giovanni Madaro wrote: > >> I need another information. I'm struggling to make a two least >> squares estimation from my panel data. Can you please give me >> the text i need to write in the command window to tell gretl >> that i want to estimate a system of two equations with >> dependent, endogenous and instrument variables?? > > Please try the Help entry for tsls, it's quite explicit. The > command syntax is > > tsls <depvar> <regressors> ; <instruments> > > Exogenous regressors should be given in both <regressors> > and <instruments>. > >> I have one main equation: >> >> RIT = VEGA + ASSET + TRAD + CIL + CONC + TIME DUMMIES >> >> in this equation RIT and VEGA are endogenous, so i want the >> second equation to be >> >> VEGA = RIT + ASSET + TRAD + CIL + CONC + TIME DUMMIES > > That's not going to work. Your instruments are ASSET, TRAD, CIL, > CONC and the TIME DUMMIES. If VEGA is endogenous you need at > least one more instrument. > > Allin Cottrell > _______________________________________________ > Gretl-users mailing list > Gretl-users(a)lists.wfu.edu > http://lists.wfu.edu/mailman/listinfo/gretl-users > _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users