We examine the impact of performance groups on the estimation of the relative importance of firm, industry and other effects on corporate performance. Performance groups comprise firms from the same industry with a similar performance over a longer period of time. We present a statistical method...

Bayes estimates are derived in multivariate linear models with unknown distribution. The prior distribution is defined using a Dirichlet prior for the unknown error distribution and a ormal-Wishart distribution for the parameters. The posterior distribution for the parameters is determined and...

According to the Sharpe-Lintner capital asset pricing model, expected rates of return on individual stocks differ only because of their different levels of non-diversifiable risk (beta). However, Fama/French (1992) show that the two variables size and book-to-market ratio capture the...

The results of analyzing experimental data using a parametric approach may heavily depend on the chosen model. With this paper we describe computational tools in Splus for a simultaneous selection of parametric regression and variance models from a relatively rich model class and of Box-Cox...

We examine the impact of performance groups on the estimation of therelative importance of ¯rm, industry and other e®ects on corporate performance.Performance groups comprise ¯rms from the same industry with asimilar performance over a longer period of time. We present a statisticalmethod...

Sowohl die industrieökonomische als auch die betriebswirtschaftliche Forschung haben sich sehr intensiv mit den Einflußfaktoren des Unternehmenserfolgs beschäftigt. Geforscht wurde über einen langen Zeitraum parallel, ohne daß die eine Forschungsrichtung voneinander Notiz genommen hätte....