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Comparing Income Distributions - Methods and their Application to Wage Distributions in Poland
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
Rankings of income distributions are usually based on comparisons of social welfare. Assuming more or less general form of a social welfare function we can compare income distributions in time and in space. Income inequality ...
Measures of Diversity and the Classification Error in the Multiple-model Approach
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
Multiple-model approach (model aggregation, model fusion) is most commonly used in classification and regression. In this approach K component (single) models C1(x), C1(x), … , CK(x) are combined into one global model ...
Economic and Sociological Community of Łódź until the Year 1945
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
At the turn of the 19th and the 20th century the process popularization of economy and sociology in Łódź was mainly carried out by the public Universities. The local press which published papers of eminent scientists aided ...
Optimum Chemical Balance Weighing Design with Correlated Errors Based on Bipartite and Ternary Designs
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
The paper is studying the estimation problem of individual weights of objects using the chemical balance weighing design under the restriction on the number times in which each object is weighed. It is assumed that the ...
Internal Cluster Quality Indexes for Classification of Symbolic Data
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
This paper describes main classification methods used for symbolic data (e.g. data in form of: single quantitative value, categorical value, interval, multivalued variable, multivaliued variable with weights) presents ...
Sequential Probability Ratio Test for Mean Based on Pseudo-Likelihood Function
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
Hypotheses about expected value of random variable can be verified by means of the parametric sequential probability ratio test in case of the known class of this variable's distribution. The problem with verification of ...
An Influence of Distance Measure Among Sample Units on Efficiency of the Modified Synthetic Estimator : Monte Carlo Analysis
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
The problem of insufficient number of sample observations representing a given population domain of interest (small area) can be solved by applying estimators, which will be able to combine sample information from the given ...
Attempt to Assess Multivariate Normality Tests
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
The assumption of multivariate normality is a basis of the classical multivariate statistical methodology. Consequences of departures from these assumptions have not been investigated well so far. There are many methods ...
On the Multivariate Test for Stability of the Population Proportions
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
The paper investigates the problem of testing the hypothesis of the stability proportion for multiple attributes. It is assumed that two random samples of size n0 and n1, respectively an selected from the population. In ...
On Testing Linearity of Trend Function
(Wydawnictwo Uniwersytetu Łódzkiego, 2009)
Testing the goodness of fit between a hypothetical trend function and its non-parametric variant will be considered. This problem was analysed e.g. by Domanski (1979, 1990), Wywiał (1990, 1995). Our result can be treated ...