Oberhofer, Harald; Pfaffermayr, Michael - Österreichisches Institut für Wirtschaftsforschung (WIFO) - 2014
This paper discusses two alternative two-part models for fractional response variables that are defined as ratios of integers. The first two-part model assumes a Binomial distribution and known group size. It nests the one-part fractional response model proposed by Papke and Wooldridge (1996)...