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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Tests for symmetry
 Böhmová, Karolína ; Hušková, Marie (advisor) ; Omelka, Marek (referee)
This study deals with testing the hypothesis of univariate symmetry about a known and unknown parametr. In three chapters several nonparametric tests is introduced, which are used to test the hypotesis. Rank tests are first type of tests in this study. It presents basic properties of general rank test of symmetry about a known parametr and well-known rank tests like Wilcoxon test or Van der Waerden test. Next tests based on empirical distribution function are described, specifically test of Kolmogorov-Smirnov type and test of Cramér-von Mises type. Tests based on empirical characteristic function are also described in this study. Finally methods Monte Carlo and bootstrap are used to approximate critical region of same tests. Powered by TCPDF (www.tcpdf.org)
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Sensory evaluation of a selected type of a meat product produced by various producers.
 VLČEK, Jiří
The diploma thesis describes the issue of sensory evaluation of food and food products, in particular the sensory evaluation of a selected type of a meat product produced by various producers. Due to its great popularity with Czech consumers, ?Vysočina? salami was selected for the sensory evaluation. Six producers were randomly selected to undergo the testing. The evaluation was conducted in the laboratories of the Faculty of Agriculture of the University of South Bohemia. The testing was performed by 58 evaluators being the students and employees of the Faculty of Agriculture of the University of South Bohemia. For the purposes of the sensory evaluation, the method of a rank test was used for which each evaluator obtained one sample of the salami of each producer and was to rank the samples based on their quality from the best to the worst. Based on the sum of ranks, the following rank was determined: Vysočina Hodice, MP Krásno, Maso Planá, Kostelecké uzeniny, KMOTR ? Masna Kroměříž and Masna Příbram. In order to ascertain the demonstrativeness of differences among the evaluated samples, the Friedman?s method was used. The resultant value has shown that there are demostrative differences among the evaluated samples at the probability level of 99 %.
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