Theses and Dissertations (Statistics)

Theses and Dissertations (Statistics)

 

Recent Submissions

  • Oppel, Anel (University of Pretoria, 2017)
    The event of a default for low-default portfolios, such as sovereign debt or banks, have received much attention as a result of the increasing instabilities in financial markets. The lack of sufficient default information ...
  • Lau, Kwok-Ho (University of Pretoria, 2017)
    In the process of data acquisition the information obtained are more than often contaminated by noise. To purify the data smoothers are designed to remove the noise. The LULU operators are such smoothers, more speci cally, ...
  • Hendriks, Johannes Jurgens (University of Pretoria, 2017)
    No abstract
  • Celliers, Rauldo Eybers (University of Pretoria, 2016)
    Runs-type signalling rules and sensitizing rules (Page (1955)) were originally introduced to detect non-random patterns in the process being monitored (Montgomery (2013)). Further development led to runs-type signalling ...
  • Makhanya, Nhlanhla Well-Beloved (University of Pretoria, 2016)
    The aim of the study was to survey permutation tests, bootstrapping and jackknife methods and their application to significance testing of regression coefficients in linear regression analysis. A Monte Carlo simulation ...
  • Letsoalo,Phineas Masete (University of Pretoria, 2016)
    Measures of poverty are usually estimated using data from national household surveys. The sample design of official household surveys is typically complex, involving multi-stage stratified cluster sampling. Complex sampling ...
  • van Niekerk, Johan Magnus (University of Pretoria, 2015)
    A combination of image processing algorithms can be used to detect and extract certain objects from images. Image noise may obscure the objects in the images and must rst be removed using image denoising and smoothing ...
  • Mazarura, Jocelyn Rangarirai (University of Pretoria, 2015)
    Over the past few years, our increased ability to store large amounts of data, coupled with the increasing accessibility of the internet, has created massive stores of digital information. Consequently, it has become ...
  • Steenkamp, Jan Hendrik Harm (University of Pretoria, 2014)
    A general insurance risk model consists of in initial reserve, the premiums collected, the return on investment of these premiums, the claims frequency and the claims sizes. Except for the initial reserve, these components ...
  • Van Staden, Paul Jacobus (University of Pretoria, 2014)
    This thesis develops a methodology for the construction of generalized families of probability distributions in the quantile statistical universe, that is, distributions specified in terms of their quantile functions. ...
  • Adamski, Karien (University of Pretoria, 2014)
    This study focuses on the development of a generalised multivariate beta type II distribution as well as the noncentral and bimatrix counterparts with positive domain. These models emanate from a sequential quality ...
  • Potgieter, Ryno (University of Pretoria, 2013)
    Determining the correct sample size is of utmost importance in study design. Large samples yield classifiers or parameters with more precision and conversely, samples that are too small yield unreliable results. Fixed ...
  • Botes, Michelle (University of Pretoria, 2014)
    An occurrence which is sometimes observed in a model based on dichotomous dependent variables is separation in the data. Separation in the data is when one or more of the independent variables can perfectly predict some ...
  • Ehlers, Rene (University of Pretoria, 2011-09-23)
    The focus of this study is the development of a group of bimatrix variate beta distributions with bounded domain for the central and noncentral cases. They are constructed from different dependent Wishart ratios. Exact ...
  • Du Plessis, K (University of Pretoria, 2007-02-23)
    The analysis of a time series is a problem well known to statisticians. Neural networks form the basis of an entirely non-linear approach to the analysis of time series. It has been widely used in pattern recognition, ...
  • Pietersen, Jacobus Johannes (University of Pretoria, 2007-12-20)
    The theory of ordinary factor analysis and its application by means of software packages do not make provision for data sampled from populations with hierarchical structures. Since data are often obtained from such populations ...
  • De Koster, Felicia Henriette (University of Pretoria, 2006-11-20)
    Please read the abstract in the section 00front of this document Accompanied by 1 disc available at main counter with shelf number EM 519.5 DE KOSTER. Master copy at back of book
  • Graham, Marien Alet (University of Pretoria, 2011-02-24)
    Statistical quality control charts originated in the late 1920’s by Shewhart (1926, 1931 and 1939). Their applications in various disciplines have been ever-increasing. Although most control charts are distribution-based, ...
  • Thiebaut, Nicolene Magrietha (University of Pretoria, 2011-11-18)
    Please read the abstract in the dissertation.
  • Smit, Ansie (University of Pretoria, 2010-10-27)
    In the early 1950s the study on how to determine true ore-grade distributions in the mining sector, sparked the development of a series of statistical tools that specifically allows for spatial and subsequently spatial-temporal ...

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