Sökning: "Statistics"

Visar resultat 16 - 20 av 2182 avhandlingar innehållade ordet Statistics.

  1. 16. Nonparametric tests for comparing two treatments by using ordinal data

    Författare :Helen Wahlström; Elisabeth Svensson; Jan Lanke; Sture Holm; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Statistik; change; clinical trial; Monte Carlo; ordered categorical data; paired data; permutation test; Pitman efficiency; power; stratification; ties; visual analogue scale; Wilcoxon-Mann-Whitney statistic; statistik; Statistics; Statistik; Statistics; Statistik;

    Sammanfattning : This thesis concerns four nonparametric tests for comparing two treatments in a randomized controlled clinical trial when the main response variable generates discrete or continuous ordinal data and measurements are made at baseline and follow-up. In the Wilcoxon-Mann-Whitney test (WMW) the baseline values are not taken into account at all, but in the other three tests both baseline and follow-up values are used. LÄS MER

  3. 17. Feasible computation of generalized linear mixed models with application to credit risk modelling

    Författare :Md. Moudud Alam; Göran Boström; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Credit risk; cluster correlation; GLMM; large data; two-step pseudo likelihood estimation; defaults contagion; predictive likelihood; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Statistics; Statistik; Statistics; Statistik; Complex Systems – Microdata Analysis;

    Sammanfattning : This thesis deals with developing and testing feasible computational procedures to facilitate the estimation of and carry out the prediction with the generalized linear mixed model (GLMM) with a scope of applying them to large data sets. The work of this thesis is motivated from an issue arising incredit risk modelling. LÄS MER

  4. 18. Some aspects of wavelet analysis in time series

    Författare :Abdullah Almasri; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Statistik; Statistics;

    Sammanfattning : .... LÄS MER

  5. 19. Characterizing Temporal Changes and Inter-Site Correlations in Daily and Sub-Daily Precipitation Extremes

    Författare :Agne Burauskaite-Harju; Anders Grimvall; Marian Scott; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Klimatförändringar; matematiska modeller; Statistics; Statistik;

    Sammanfattning : Information on weather extremes is essential for risk awareness in planning of infrastructure and agriculture, and it may also playa key role in our ability to adapt to recurrent or more or less unique extreme events. This thesis reports new statistical methodologies that can aid climate risk assessment under conditions of climate change. LÄS MER

  7. 20. Model choice in Bayesian VAR models

    Författare :Shutong Ding; Mattias Villani; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Statistics; Statistik;

    Sammanfattning : .... LÄS MER