Die Arbeit umfaßt die Darstellung und Anwendung von Regressionsmodellen für Zähldaten, deren abhängige Variable nur nichtnegative ganzzahlige Werte annehmen kann. Die Spezifikationen des Poisson- und des NegBin 2-Modells mit den zugehörigen Schätzverfahren und Beurteilungskriterien werden...

Focusing on adult members of German households, this paper investigates the determinants of public transit ridership with the aim of quantifying the effects of fuel prices, fares, person-level attributes, and characteristics of the transit system on transport counts over a five-day week. The...

The work at hand tries to identify factors that explain accidents on German Autobahn connectors. To find these factors the empirical study makes use of count data models. The findings are based on a set of 197 ramps, which we classified into three distinct types of ramps. For these ramps...