Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: What multiple regression model for extreme distributions


From   Filipa de Castro <[email protected]>
To   [email protected]
Subject   Re: st: What multiple regression model for extreme distributions
Date   Tue, 2 Feb 2010 09:15:19 -0600

I would suggest zero-inflated negative binomial _zinb_

On Tue, Feb 2, 2010 at 9:09 AM, muhammed abdul khalid
<[email protected]> wrote:
>
> I have a household income survey data ( 38,000 observations), and my
> problem is doing a multiple regression on saving ( independent var) to
> ethnicity/strata/employment
> etc( dependent var).
>
> The problem is this : 70% of my observation for the value of saving is
> zero. I had recode it to 1 and log them, but the distribution is still
> extremely skewed ( mean 0.78, std dev is 2.4  min 0 max 14). The
> historgam still looks like the letter L , exteremly skewed to the
> right with  long tail.  Obviously, OLS is out, and I tried Poisson(
> glm nbinomial) but the distribution is still not distributed normally.
> The data are in order i.e no missing values etc etc. It is clean.For
> some reason, lobit would not run.
>
> What do you suggest? Thank you so much.
>
> Muhammed.
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index