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Nonparametric tests in SPSS
Kantorová, Petra ; Pecáková, Iva (advisor) ; Blatná, Dagmar (referee)
This bachelor thesis deals with description of nonparametric tests, which we can find in so called statistical packet SPSS. The first part of the thesis covers examples of this specific kind of tests (nonparametric tests), selected according to different features, its characteristics and individual steps of testing this kind of hypotheses. In the second part the reader can find me-thods of how we can use this kind of tests in SPSS. The third and last part of the bachelor thesis offers practical application and comparison of outcomes of nonparametric test.
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The graphical data analysis in various statistical computing systems
Maroušek, Vít ; Pecáková, Iva (advisor) ; Černý, Jindřich (referee)
Goal of my thesis is to show and compare various ways of graphical data analysis in statistical computing systems. This area is still developing, new techniques are being discovered and the already known are being developed. This work is split into three parts, one theoretical, one comparing and one general with new ideas. The first part is theoretical and is dedicated to classification of statistical variables. For statistical computing systems I offer a simplified classification because of the way they treat some types of variables. Second part of my work compares graphical outputs of three most used statistical computing systems SAS, SPSS and STATISTICA. This comparison is based on some of the most commonly used graphical methods. The outputs are tables with detailed description and examples of graphs from each system are attached. The last part is focused on the general graphical data exploration and follows the simplified classification of variables. In this part I use common graphical techniques and introduce some new or fewer used techniques. Many of them haven't been described in any Czech literature yet. Almost all the graphs presented in this work were created by me in various statistical computing systems. Two were copied from literature because of serious problems with the process of their creation.
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Nonparametric tests in statistical software
Skolil, Lukáš ; Blatná, Dagmar (advisor) ; Nenadál, Karel (referee)
Cílem této diplomové práce je praktické i teoretické seznámení uživatelů neparametrických metod s několika vybranými statistickými programy, v nichž je možné neparametrické analýzy provádět. Nedílnou součástí cíle je i porovnání těchto programů. V teoretické části jsou stručně popsány základy testování statistických hypotéz a teorie neparametrických testů. V praktické části jsou prozkoumány programy NCSS 2007, Statistica 7, SPSS 15, Systat 12, Stagraphics Centurion XV, Minitab 15, S-Plus 6.2, SAS 9.1 a StatXact 7. U každého software jsou popsány neparametrické testy, které obsahuje, a zjednodušeně i vkládání dat a výstupy. Nakonec jsou vybrané programy porovnány z několika hledisek. Všechny vybrané programy obsahují značné množství neparametrických testů a liší se většinou jen v detailech. Pro většinu analýz není potřeba hledat speciální programy a dají se použít všechny vybrané, pouze pro porovnávání rozptylů je nutné použít buď SAS nebo StatXact, protože v jiných programech ve výběru tyto testy nenalezneme.
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