MM*STAT ist ein flexibel einsetzbares Tool für Einführungskurse in Statistik im Grundstudium. Folgende konzeptionelle Überlegungen waren dabei von besonderer Bedeutung: Erstens muss die Lehrveranstaltung »Statistik« für Studenten jeder Fachrichtung ein breites Spektrum konkreter...

Statistical software has also become an important part of scientific research that is reflected in the publications of the research results. Publishing a mathematical theorem requires also the publication of the proof of this theorem. The result of a computation can be seen as the equivalent of...

We propose a client server architecture for statistical computing. The main feature of our approach is the possibility to connect various client programs via a TCP/IP connection to a powerful statistical engine. This offers the opportunity to include the statistical engine into a number of...

We introduce the notion of a convex measure of risk, an extension of the concept of a coherent risk measure defined in Artzner et aL (1999), and we prove a corresponding extension of the representation theorem in terms of probability measures on the underlying space of scenarios. As a case...

Die Agency-Theorie verweist darauf, daß die Trennung von Eigentum und Kontrolle in Unternehmen zu einem Interessenskonflikt führen kann, wenn Informationsasymmetrien und opportunistisches Verhalten beobachtet werden. Gleichzeitig bildet die Agency-Theorie den theoretischen Bezugsrahmen für...

This paper investigates the behaviour in repeated decision situations. The experimental study shows that subjects show low or no risk-aversion, but put very high value on the opportunity to sell the lottery in every stage of the decision problem. There is evidence that risk attitudes depend on...

Studying evolutionarily successful behavior we show in a general framework that when individuals maximizing payoff differentials invest resources in punishing others. Interestingly, these investments are increasing in individuals, own wealth and decreasing in the wealth of others.

We discuss how to assess the performance for credit scores under the assumption that for credit data only a part of the defaults and nondefaults is observed. The paper introduces a criterion that is based on the difference of the score distributions under default and nondefault. We show how to...