Search found 13 matches

by Cabinho
Tue Jun 18, 2013 12:11 pm
Forum: Estimation
Topic: read me please! multinomial logit
Replies: 7
Views: 13658

Re: read me please! multinomial logit

No, it is not.
If my dependent variable has values of 0,1,2 and 3 and I use logistic regression under the censored methods but I use left censor 0 and no right censor. No truncation.

Am I converting the dependent variable in 0,1 where 1 can be 1,2 and 3?

Thank you Glenn
by Cabinho
Tue Jun 18, 2013 10:26 am
Forum: Estimation
Topic: read me please! multinomial logit
Replies: 7
Views: 13658

Re: read me please! multinomial logit

There is an example program for using the LogL object to estimate a multinomial logit (Help/Quick Help Reference/Sample Programs & Data/Logl). As to the panel issue, it really depends on what kinds of structure you want to put on your problem. The sample program above is non-panel aware, and de...
by Cabinho
Thu Jun 13, 2013 9:20 am
Forum: Econometric Discussions
Topic: serial correlation & heteroskedasticity
Replies: 21
Views: 35093

Re: serial correlation & heteroskedasticity

Thank you so much Startz!
by Cabinho
Thu Jun 13, 2013 9:16 am
Forum: Econometric Discussions
Topic: serial correlation & heteroskedasticity
Replies: 21
Views: 35093

Re: serial correlation & heteroskedasticity

Your variables probably have unit roots. This may account for the serial correlation. I don't see a way for you to eliminate the serial correlation. Startz, if I have heteroskedasticity (White test through ols) and want to run a tobit and logistic regression with the same model and still have heter...
by Cabinho
Wed Jun 12, 2013 10:07 am
Forum: Econometric Discussions
Topic: serial correlation & heteroskedasticity
Replies: 21
Views: 35093

Re: serial correlation & heteroskedasticity

Your variables probably have unit roots. This may account for the serial correlation. I don't see a way for you to eliminate the serial correlation. Startz, if I have heteroskedasticity (White test through ols) and want to run a tobit and logistic regression with the same model and still have heter...
by Cabinho
Mon Jun 10, 2013 5:18 pm
Forum: Data Manipulation
Topic: VIF analysis in Panel data
Replies: 19
Views: 64292

Re: VIF analysis in Panel data

This is probably not set in stone but can somebody explain what is the rule of thumb for uncentered and centered VIF in cross sectional data?
by Cabinho
Mon Jun 10, 2013 12:30 pm
Forum: Econometric Discussions
Topic: GARCH (1,1)-M
Replies: 15
Views: 18366

Re: GARCH (1,1)-M

The ARCH model assumes the data is sequential. You might think about whether your data has been inadvertently sorted in some interesting way. Interesting. I will check that. One last questions: If I add a independent lagged variable in this type of cross-sectional study such that is X=X(-1) but my ...
by Cabinho
Mon Jun 10, 2013 12:19 pm
Forum: Econometric Discussions
Topic: GARCH (1,1)-M
Replies: 15
Views: 18366

Re: GARCH (1,1)-M

The ARCH model assumes the data is sequential. You might think about whether your data has been inadvertently sorted in some interesting way. Interesting. I will check that. One last questions: If I add a independent lagged variable in this type of cross-sectional study such that is X=X(-1) but my ...
by Cabinho
Mon Jun 10, 2013 12:03 pm
Forum: Econometric Discussions
Topic: GARCH (1,1)-M
Replies: 15
Views: 18366

Re: GARCH (1,1)-M

Serial correlation or ARCH with cross sectional data is kinda weird, although not impossible. How can I solve ARCH in a Tobit or Logit model? Should I run the regression with the ARCH method instead even though my models use binary and categorical variables? What about serial correlation? Thank you...
by Cabinho
Mon Jun 10, 2013 11:52 am
Forum: Econometric Discussions
Topic: GARCH (1,1)-M
Replies: 15
Views: 18366

Re: GARCH (1,1)-M

Serial correlation or ARCH with cross sectional data is kinda weird, although not impossible. Thank you. Ok, so I have three questions: 1. I am trying to propose tobit and logit models but I have been running a OLS first with the same variables to check for ARCH, serial correlation and heteroskedas...
by Cabinho
Sat Jun 08, 2013 1:27 pm
Forum: Econometric Discussions
Topic: GARCH (1,1)-M
Replies: 15
Views: 18366

Re: GARCH (1,1)-M

Running an OLS first and testing for ARCH. I figured if I ran an OLS first with the model I want to use to test for ARCH and find problems, I would have those same problems in the same model when running the regression with tobit or logit even though I cannot test for those problems after running to...
by Cabinho
Fri Jun 07, 2013 10:58 am
Forum: Econometric Discussions
Topic: GARCH (1,1)-M
Replies: 15
Views: 18366

Re: GARCH (1,1)-M

Hi, If I am working with cross sectional data with tobit (binomial dependent variable) and logit (categorical dependent variables) models and have an ARCH structure in any of those, should I run the regression with an ARCH method instead of tobit or logit? Also, will the ARCH method fix serial autoc...
by Cabinho
Mon May 27, 2013 9:45 am
Forum: Econometric Discussions
Topic: non normal distribution
Replies: 6
Views: 9447

Re: non normal distribution

Hi,

Is non normal distribution in cross sectional data a problem?

If it is still existent even after logging data, what can be done?

Thank you

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