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Start Over Subject statistical methods

2. Nesprávná užívání statistické významnosti a jejich možná řešení

Creator:
Soukup, Petr
Format:
print
Type:
model:article and TEXT
Subject:
statistické metody, statistical methods, statistická významnost, statistical significance, 18, and 3
Language:
Czech
Description:
The use of significance tests in social sciences is widespread mainly due to simple computation via statistical packages. Unfortunately the more social scientists use statistical significance estimates for making causal inferences the less they appear to understand about this influential concept. Statistical modelling results are usually presented in terms of their statistical significance and little other information is provided. The goal of this article is to show the limits of using statistical significance as a sole means of making inferences; and to present alternative statistical fit indicators readily available within frequentist approach to statistics: confidence intervals, minimum sample size and power analysis. Multiple working hypotheses are also explored together with two well known information criteria - AIC and BIC. This article provides practical information on how to undertake valid and reliable statistical analyses of social science data., Petr Soukup., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. Probabilistic model for masonry strength of existing structures

Creator:
Sýkora, Miroslav and Holický, Milan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
probabilistic model, masonry strength, statistical methods, and existing structures
Language:
English
Description:
In the Czech Republic numerous existing structures are made of different types of masonry. Decisions concerning upgrades of these structures should be preferably based on the reliability assessment, taking into account actual material properties. Due to inherent variability of masonry information on its mechanical properties has to be obtained from tests. Estimation of masonry strength from measurements may be one of key issues in the assessment of existing structures. The standard technique provided in the Eurocode EN 1996-1-1 is used to develop the probabilistc model of masonry strength taking into account uncertainties in basic variables. In a numerical example characteristic and design values of the masonry strength derived using principles of the Eurocode are compared with corresponding fractiles of a proposed probabilistic model. It appears that the characteristic value based on the probabilistic model is lower than that obtained by the standard technique. To the contrary, the partial factor for masonry recommended in EN 1966-1-1 seems to be rather conservative. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. Recenze knihy Petra Hebáka a kolektivu Statistické myšlení a nástroje analýzy dat

Creator:
Chylíková, Johana
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
statistická analýza, statistické metody, vícerozměrné statistické metody, statistical analysis, statistical methods, multivariate analysis, 18, and 316
Language:
Czech
Description:
[autor recenze] Johana Chylíková. and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public