ZOIB: Stata module to fit a zero-one inflated beta distribution by maximum likelihood

Maarten Buis

Statistical Software Components from Boston College Department of Economics

Abstract: zoib fits by maximum likelihood a zero-one inflated beta distribution to a distribution of a variable depvar. depvar ranges between 0 and 1: for example, it may be a proportion. It will estimate the probabilities of having the value 0 and/or 1 as separate processes. The logic is that we can often think of proportions of 0 or 1 as being qualitatively different and generated through a different process as the other proportions.

Language: Stata
Requires: Stata version 8.2
Keywords: compositional data; zero; one; proportion (search for similar items in EconPapers)
Date: 2010-05-30, Revised 2012-08-08
Note: This module should be installed from within Stata by typing "ssc install zoib". 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.
References: Add references at CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/z/zoib.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/z/zoib.hlp help file (text/plain)
http://fmwww.bc.edu/repec/bocode/z/zoib_postestimation.hlp help file (text/plain)
http://fmwww.bc.edu/repec/bocode/z/zoib_p.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/z/zoib_lf.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/z/zib_lf.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/z/zoib_beta_lf.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/o/oib_lf.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/k/k401.dta example data file (application/x-stata)

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