• Evaluation of College Students with Application of Latent Class Analysis 

  Rybicka, Aneta; Pełka, Marcin (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  In social sciences, especially in economy, to reveal relations between variables it’s easy to apply many known statistical tools when we deal with observable (measureable) variables. The problems appear when dealing with ...

• Statistical Inference from Complex Sample with SAS on the Example of Household Budget Surveys 

  Bartosińska, Dorota (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  Many sample surveys are not based on simple or unrestricted random samples, but usually on complex samples with stratification, clustering, unequal inclusion probabilities and multistage sampling. To estimate a parameter, ...

• Bayesian Exponential Survival Model in the Analysis of Unemployment Duration Determinants 

  Grzenda, Wioletta (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  The primary objective of the work is to identify demographic and socio-economic factors influencing the unemployment duration in the recent period in Poland. Different approaches to the problem have been applied. In this ...

• Applicability of the Multi- Group Confirmatory Factor Analysis to Construction of Business Sentiment Indicators 

  Białowolski, Piotr (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  The paper presents arguments that advocate for application of the multi-group confirmatory factor analysis as a tool for constructing sentiment indicators in business surveys. Reliable measurement and comparisons of the ...

• Special Cases of Some General Formula for Price Indices 

  Białek, Jacek (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  In the paper we present a general formula for aggregative price indices that satisfies most postulates coming from the axiomatic price index theory. We show that a lot of known and useful price indices are particular ...

• Imputation of Missing Data Using R Package 

  Misztal, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  Missing data are quite common in practical applications of statistical methods. Imputation is general statistical method for the analysis of incomplete data sets. The goal of the paper is to review selected imputation ...

• On Pseudo-EBLUP Under Some Model for Longitudinal Data with Auxiliary Variables 

  Żądło, Tomasz (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  The problem of modeling longitudinal profiles is considered assuming that the population and elements affiliation to subpopulations may change in time. The considerations are based on a model with auxiliary variables for ...

• Comparison of Stability of Classical Taxonomy Bagging Metod with Bagging Based on Co-Occurence Data 

  Rozmus, Dorota (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  Ensemble approach has been successfully applied in the context of supervised learning to increase the accuracy and stability of classification. Recently, analogous techniques for cluster analysis have been suggested in ...

• Hierarchical Log-linear Models for Contingency Tables 

  Brzezińska, Justyna (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  Log-linear models are widely used for qualitative data in multidimensional contingency tables. Hierarchical log-linear models are models that include all lower-order terms composed from variables contained in a higher-order ...

• Some Construction of Regular A-Optimal Spring Balance Weighing Designs for Even Number of Objects 

  Graczyk, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  In the paper, the problem of construction of the spring balance weighing designs satisfying the criterion of A-optimality is discussed. The incidence matrices of the partially incomplete block designs are used for ...

• On Generating Correlated Pseudo-Random Binary Numbers 

  Gamrot, Wojciech (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  The paper is devoted to the problem of generating sequences of binary vectors having joint distribution allowing for correlation between individual elements. A procedure for generating such a distribution from uncorrelated ...

• Notes on the Optimum Chemical Balance Weighing Design 

  Ceranka, Bronisław; Graczyk, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  In the paper, the model of the chemical balance weighing design, i.e. model in that the result of experiment we can describe as linear function of unknown measurements of objects with known factors, is presented. ...

• Tests of Multivariate Independence Based on Copula 

  Tomanek, Joanna (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  Very often the aim of statistical analysis is to identify dependencies among variables. More and more multidimensional variables and processes are in focus. This paper presents the tests of multivariate independence based ...

• Using Permutation Tests in Multiple Correlation Investigation 

  Stelmach, Jacek (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  An indication of correlation between dependent variable and predictors is a crucial point in building statistical regression model. The test of Pearson correlation coefficient – with relatively good power – needs to ...

• On Testing the Significance of the Coefficients in the Multiple Regression Analysis 

  Kończak, Grzegorz (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  The multiple regression analysis is a statistical tool for the investigation relationships between the dependent and independent variables. There are some procedures for selecting a subset of given predictors. These ...

• Some Properties of the Robust Trend Tests 

  Trzpiot, Grażyna (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  Formal testing of whether a time series contains a trend is greatly complicated by the fact that in practice it is not known whether the trend is embedded in an I(0) or I(1), series, that is, within a weakly or strongly ...

• Statistical Tests Based on Empty Cells 

  Domański, Czesław (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

  In professional literature on statistics, a constantly growing interest is observed in non-parametric methods. Commonly these methods are based on counting, rank or position statistics and on a number or length of series. ...

• Posthumous tribute to Professor Bogusław Guzik 

  Burzała, Milda Maria (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

• Professor Wiktor Oktaba 1920–2009 

  Ceranka, Bronisław (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

• Selected Scientific Works of Zbigniew Pawłowski on the Occasion of the 80th Anniversary of his Birthday 

  Wywiał, Janusz Leszek (Wydawnictwo Uniwersytetu Łódzkiego, 2012)

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