Search found 6 matches

by Nile
Sat May 21, 2011 3:09 pm
Forum: Estimation
Topic: Cross sections without valid observations dropped
Replies: 1
Views: 2940

Cross sections without valid observations dropped

I am studying the factors affecting intra-Arab trade using panel data for 16 Arab countries for 5 years since 2005. This means if I have a balanced data I should have 1200 observations (16*15*5) but because of missing data for some years I have only 790 observations. After estimating the model The e...
by Nile
Sat Aug 14, 2010 6:37 am
Forum: Estimation
Topic: Estimating time invariant variables with fixed effects
Replies: 9
Views: 14279

Re: Estimating time invariant variables with fixed effects

Please I konw that I am asking alot, but I want to make sure about what I understand from your answer. Would you mind answering my question please?
by Nile
Fri Aug 13, 2010 6:41 pm
Forum: Estimation
Topic: Estimating time invariant variables with fixed effects
Replies: 9
Views: 14279

Re: Estimating time invariant variables with fixed effects

Sorry just to make sure that I got what you mean. Do you mean just pooling the data without both fixed or random effects?
by Nile
Fri Aug 13, 2010 5:13 pm
Forum: Estimation
Topic: Estimating time invariant variables with fixed effects
Replies: 9
Views: 14279

Re: Estimating time invariant variables with fixed effects

Dear startz Thanks a milion, Iam realy appreciate your help. But forgive me I still have a question. Yes I got your point, you mean that any time invariant effects and only vary across the cross sections will be included in the intercept by definition using the fixed effect model. But all the previo...
by Nile
Fri Aug 13, 2010 10:44 am
Forum: Estimation
Topic: Estimating time invariant variables with fixed effects
Replies: 9
Views: 14279

Re: Estimating time invariant variables with fixed effects

Dear startz First Thank you so much for your quick responce. OK I appreciate your help startz. I understand what you said about the existance of 2 time invariant regressors (for instance distance and the intercept). And as you said fixed effects in the presence of time invariant variables is meaning...
by Nile
Fri Aug 13, 2010 6:01 am
Forum: Estimation
Topic: Estimating time invariant variables with fixed effects
Replies: 9
Views: 14279

Estimating time invariant variables with fixed effects

Hi everybody I have a problem with entering time invariant variables to the panel model in order not to have near singular matrix. I wonder if you can help me. Hope that you can. The following is my problem in details. My model tries to test the hypothesis: Logistics performance works as a barrier t...

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