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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Verification of linear mixed model assumptions
 Krnáč, Ľuboš ; Kulich, Michal (advisor) ; Hudecová, Šárka (referee)
1 AbstraktEN The diploma thesis deals with linear mixed effects models. In the first chap- ter, we discuss parameter estimation and hypothesis testing in the linear mixed effects models. The second chapter is dedicated to graphical diagnostics. We look at the suitable diagnostic plots for residuals and random effects estimates. It is closely described, how the violations of assumptions affect the diagnostic plots. In the third chapter we have consequences of the violations of assumptions on the parameter estimates and results of hypothesis testing for fixed effects. 1
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Confidence intervals for differences and ratios of proportions
 Krnáč, Ľuboš ; Kulich, Michal (advisor) ; Zvára, Karel (referee)
The Bachelor thesis deals with the creation of confidence intervals for diffe- rence of parameters of two distributions. In the first part we consider the problem of making such confidence intervals for differences. Then we try to find sufficient conditions for MOVER, which leads to new, non-trivial confidence intervals for difference of parameters of two distributions. These confidence intervals have im- proved and desired properties. There are also examples of usage of MOVER, and possible difficulties. The third section contains graphs of coverage probabili- ties for different input intervals. These graphs are made to show different levels of achieved coverage probabilities for some input intervals, namely Clopper-Pearson, Wald, Wilson and logit. 1
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