|
| |
|
|
Length of doctoral studies at the Faculty of Informatics and Statistics
Hybšová, Aneta ; Malá, Ivana (advisor) ; Čabla, Adam (referee)
This thesis describes the survival analysis, exactly Kaplan-Meier estimate. A main part of the thesis deals with the problem of censored data, which is typical for survival analysis. The empirical part describes lenght of PhD studies at the Faculty of Informatics and Statistics and their "survival" in studies by Kaplan-Meier curves. First are analyzed uncensored data and then the whole data set (censored and uncensored data).
|
|
|
Long-term development of indicators of quality of life in developing countries
Zahradníčková, Jana ; Čabla, Adam (advisor) ; Šimpach, Ondřej (referee)
The aim of this thesis is to find out whether the quality of life in developing countries has increased over the last decades. The thesis is based on own calculations - modeling the trend of time series from the World Bank database - and affects most of the major problems which are specific to developing countries, such us high mortality rates, poverty, corruption and many others. In the first part of the thesis developing countries from three continents are selected, indicators in the field of demography, economics and sociology are characterized and data and methods are described. In the second part the trend of times series of selected indicators is modeled that allows benchmarking in space and time.
|
|
|
Analysis of results in the Statistics course, 4ST201
Krajča, Marek ; Malá, Ivana (advisor) ; Čabla, Adam (referee)
The main objective of my bachelor thesis is to describe the discrepancy of students' results in the Statistics course, 4ST201. I hope to highlight the differences of student results between the winter semester of 2010/2011, summer semester of 2010/2011, and the winter semester of 2011/2012, during which a new structure of final examination was introduced. I will begin with a detailed discussion and analysis of results between the three aforementioned testing periods, and I hope to conclude by offering a hypothesis of discrepancies between the old and new testing structures.
|
|
|
Evaluation of quality of life in terms of poverty rates
Brázdilová, Michaela ; Malá, Ivana (advisor) ; Čabla, Adam (referee)
This bachelor thesis deals with the evaluation of quality of life in terms of poverty rates. The aim is to define how social conditions of population affect subjective perceptions of quality of life. The paper provides an overview of the most important researches in this area, of which Survey on perception of quality of life in 75 European cities and survey Income and Living Conditions are analysed in detail. The dependence of a problem of poverty on other social indicators is investigated. The last chapter is devoted to calculations of poverty rates, especially at risk of poverty rate, but there are other indicators of poverty mentioned in terms of income inequality. In the summary, there is a poverty index presented as one possible indicator of social quality of life.
|
|
|
Statistical analysis of results from the subject 4ST201
Novák, Miroslav ; Čabla, Adam (advisor) ; Malá, Ivana (referee)
The main goal of this bachelor thesis is the statistical comparison of results from students who attended the course Statistika at the University of Economics in Prague. The thesis is divided into two main parts. The first part is concentrated on the results of students in winter semester of the academic year 2011/2012. This part is mainly focused on mid-term tests throughout semester. In the second part I compare results of students in the summer and winter semester, to this comparison I used data from summer semeseter 2010/2011 and data from winter semester 2011/2012. The small theoretical overview does not miss in the beginning and in the conclusion we can find the summary of all findings and calculations.
|
|
|
Long-term development of raw materials prices
Guchshina, Yekaterina ; Čabla, Adam (advisor) ; Vild, Jiří (referee)
This bachelor thesis focuses on long-term development of raw materials and connected with them Simon - Ehrlich bet. Basic data were obtained from accessible databases USGS. The aim of this thesis is by statistical methods to survey the development of prices five metals: copper, tungsten, tin,chromium and nickel, compare the data with an average income and money supply and try to extend famous Simon-Ehrlich wager to 2010 year. This thesis is divided into five parts. In the first two is described wager a background information of the development of metals and their prices. The statistical methods used in the work and their use to equalize basic data are described in the third and fourth chapters. The fifth chapter is an overview of prolongation bet in 1990-2010 period.
|
|
|
Statistical methods in marketing research
Mošová, Monika ; Vild, Jiří (advisor) ; Čabla, Adam (referee)
This thesis deals with statistical methods in marketing research that are used especially for evaluating survey research. At the beginning of the thesis we shortly describe a marketing research process. Next chapter deals with data, afterwards we focus in two chapters on their analyzing. These chapters are Univariate data analysis and Bivariate data analysis and include brief theoretical descriptions which are afterwards demonstrated on examples. These examples are calculated sometimes manually but mostly the SPSS is used. In case we use the SPSS the way of input will be described.
|
|
|
Geometric probability
Březinová, Eliška ; Malá, Ivana (advisor) ; Čabla, Adam (referee)
This thesis deals with geometric probability applied on practical exercises. It covers Buffon's needle problem in detail; Laplace's conclusions about pi are supported by my own trial. Next, Bertrand's paradox is solved, and the conclusions are demonstrated on computer programs, which simulate the experiment. One chapter is dedicated to eight different exercises, which can be often found in textbooks. In the end we will mention practical usage of geometric probability, especially in the medicine field. We will point out to usage of modified Buffon's principle, which is used to estimate lengths of planar structures.
|
|
|
Estimates in Survival Analysis
Čabla, Adam ; Malá, Ivana (advisor) ; Tomášek, Ladislav (referee)
This thesis introduces methods used in time-to-date analysis. It is written generally and so usable in dealing with any example. The thesis deals with problem of censoring, which means, that some observations occurred after the following, which is typical for the lifetime analysis. Methods mentioned in the thesis are nonparametric and parametric estimates of the survival function and their characteristics, and regression models, concretely Cox model and accelerated failure time model, which examine effect of the covariates on survival function. In the thesis is beside survival function presented hazard function, which express intensity of the analyzed event and cumulative hazard function, which is created as the name suggests by cumulative summation of the hazard function. Estimates of these functions are obtainable from survival function and for parametric estimate often exists formula resulting from parameters of used distribution. Empirical part of the thesis introduces influence of several different types and degrees of censoring on parametric and nonparametric estimates of the survival function, mean and median. The other empirical example is the usage of regression analysis on the data from the lungs cancer research made by Mayo Clinic.
|
guest ::
