IDEAS home Printed from https://ideas.repec.org/c/boc/bocode/s457897.html
 

GB2LFIT: Stata module to fit Generalized Beta of the Second Kind distribution by maximum likelihood (log parameter metric)

Author

Listed:
  • Stephen P. Jenkins

    (London School of Economics and Political Science)

Programming Language

Stata

Abstract

gb2lfit fits by ML the 4 parameter Generalized Beta distribution of the second kind (GB2) to sample observations on a random variable. gb2pred calculates statistics summarizing a GB2 distribution which has been fitted using gb2fit. Unit record data are assumed (rather than grouped data). The Singh-Maddala (1976) distribution is the special case when parameter p = 1, and the Dagum (1977, 1980) distribution is the special case when parameter q = 1. The GB2 distribution has been shown to provide a good fit to data on income but, of course, it might also be suitable for describing any skewed variable, not only income. Compared to gb2fit (q.v.), gb2lfit has the following features: (i) parameters are estimated in the logarithmic metric (but reported in the original metric); (ii) data may be right-censored or left-truncated; (iii) there are improved options for calculating inequality measures implied by the parameter estimates (with SEs); (iv) in particular, estimates of the Gini coefficient are reported.

Suggested Citation

  • Stephen P. Jenkins, 2014. "GB2LFIT: Stata module to fit Generalized Beta of the Second Kind distribution by maximum likelihood (log parameter metric)," Statistical Software Components S457897, Boston College Department of Economics.
  • Handle: RePEc:boc:bocode:s457897
    Note: This module should be installed from within Stata by typing "ssc inst gb2lfit". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
    as

    Download full text from publisher

    File URL: http://fmwww.bc.edu/repec/bocode/g/gb2lfit.ado
    File Function: program code
    Download Restriction: no

    File URL: http://fmwww.bc.edu/repec/bocode/g/gb2lfit_ll.ado
    File Function: program code
    Download Restriction: no

    File URL: http://fmwww.bc.edu/repec/bocode/g/gb2lfit.hlp
    File Function: help file
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:boc:bocode:s457897. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Christopher F Baum (email available below). General contact details of provider: https://edirc.repec.org/data/debocus.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.