We show how the rootogram - a graphical tool associated with the work of J. W. Tukey and originally used for assessing goodness of fit of univariate distributions - can help to diagnose and treat issues such as overdispersion and/or excess zeros in regression models for count data. Two empirical...

Rasch mixture models can be a useful tool when checking the assumption of measurement invariance for a single Rasch model. They provide advantages compared to manifest DIF tests when the DIF groups are only weakly correlated with the manifest covariates available. Unlike in single Rasch models,...

In this article we propose a modification of time-series segmentation algorithm which allows to identify homogenous periods of money market history by clustering multidimensional probability distributions of relevant variables. We provide step-by-step instructions to systematically choose how...

We discuss some challenges presented by trending data in time series econometrics. To the empirical economist there is little guidance from theory about the source of trend behavior and even less guidance about practical formulations. Moreover, recent proximity theorems [W. Ploberger, P.C.B....

In this paper we employ the choice experiment method to estimate local citizens’ valuation of a public intervention which proposes to improve the quality of an important environmental resource, namely the river Ganga in India. 150 randomly selected citizens of the municipality of Chandernagore...

This paper provides an overview over simultaneous equation models (SEM) in the context of analyses based on regional data. We describe various modelling approaches and highlight close link of SEMs to theory and also comment on the advantages and disadvantages of SEMs.We present selected...

Opracowanie prezentuje wyniki zastosowania empirycznej miary entropii rozkładu prawdopodobieństwa w celu oceny zawartości informacyjnej danych pochodzących z testu koniunktury Instytutu Rozwoju Gospodarczego SGH. Miary entropii wyznaczane są dla realizacji i oczekiwań wyrażanych w teście...

In this paper, we consider a family of recently-proposed measurement invariance tests that are based on the scores of a fitted model. This family can be used to test for measurement invariance w.r.t. a continuous auxiliary variable, without pre-specification of subgroups. Moreover, the family...

The thesis presents a construction of a grid that discretizes the threshold model introduced by Geman and Roncoroni (2006) for electricity spot prices, incorporating both mean reversion and jumps, the direction of the latter depending on the price of the underlying at the time of the jump. The...

The jackknife is a resampling method that uses subsets of the original database by leaving out one observation at a time from the sample. The paper develops fast algorithms for jackknifing inequality indices with only a few passes through the data. The number of passes is independent of the...