This paper proposes simple Hausman-type tests to check for bias in the log-periodogram regression of a time series believed to be long memory. The statistics are asymptotically standard normal on the null hypothesis that no bias is present, and the tests are consistent. The use of the tests in...

Empirische Analysen mit Paneldaten sind aus der wirtschafts- und sozialwissenschaftlichen Forschung seit Beginn der 80er Jahren nicht mehr wegzudenken. Die Beliebtheit resultiert unter anderem aus der Möglichkeit, mithilfe von Paneldaten unbeobachtete Unterschiede zwischen den...

The book provides graduate students and researchers with an up-to-date survey of statistical and econometric techniques for the analysis of count data, with a focus on conditional distribution models. Proper count data probability models allow for rich inferences, both with respect to the...

Introduction to empirical data analysis -- Regression analysis -- Analysis of variance -- Discriminant analysis -- Logistic regression -- Contingency analysis -- Factor analysis -- Cluster analysis -- Conjoint analysis.