HETEROGENEITY, EXCESS ZEROS, AND THE STRUCTURE OF COUNT DATA MODELS

• 1 May 1997
• journal article
• research article
• Published by Wiley in Journal of Applied Econometrics
• Vol. 12  (3) , 337-350
• https://doi.org/10.1002/(sici)1099-1255(199705)12:3<337::aid-jae438>3.0.co;2-g

Abstract

Keywords

• POISSON MODEL
• NULL MODEL
• MIXTURE MODEL