Search for dissertations about: "polychoric correlation"

Found 5 swedish dissertations containing the words polychoric correlation.

  2. 1. Studies of the polychoric correlation and other correlation measures for ordinal variables

    Author : Ana M. Quiroga; Uppsala universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

    Abstract : .... READ MORE

  4. 2. Some Aspects on Confirmatory Factor Analysis of Ordinal Variables and Generating Non-normal Data

    Author : Hao Luo; Fan Yang-Wallentin; Johan Lyhagen; Karl Jöreskog; Marie Wiberg; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; confirmatory factor analysis; ordinal variables; maximum likelihood; weighted least squares; polychoric correlation; non-normal data; Fleishman s method; Monte Carlo simulation; Statistics; Statistik; Statistics; Statistik;

    Abstract : This thesis, which consists of five papers, is concerned with various aspects of confirmatory factor analysis (CFA) of ordinal variables and the generation of non-normal data. The first paper studies the performances of different estimation methods used in CFA when ordinal data are encountered. READ MORE

  5. 3. On predictions, measurement, and causal inference : Essays on statistical correlations and statistical applications in labor market economics and criminology

    Author : Petra Ornstein; Johan Lyhagen; Per Johansson; Kenneth Carling; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; risk marker studies; correlation measures; identification; field experiments; observational studies; Statistics; Statistik;

    Abstract : This thesis consists of five papers covering a broad range of statistical themes, from prediction via correlation measures to causal inference.Paper I uses a nationally representative survey of separated Swedish women to examine whether men who strive to control their partners during their relationships are more likely to stalk or assault their ex-partners after separation. READ MORE

  6. 4. Contributions to the Theory of Measures of Association for Ordinal Variables

    Author : Joakim Ekström; Rolf Larsson; Albert Satorra; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Statistics; Statistik; Statistics; statistik;

    Abstract : In this thesis, we consider measures of association for ordinal variables from a theoretical perspective. In particular, we study the phi-coefficient, the tetrachoric correlation coefficient and the polychoric correlation coefficient. READ MORE

  7. 5. Essays on Estimation Methods for Factor Models and Structural Equation Models

    Author : Shaobo Jin; Fan Yang-Wallentin; Rolf Larsson; Li Cai; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; shrinkage; factor rotation; penalized maximum likelihood; pseudo-maximum likelihood; multi-group analysis; ordinal data; robustness; Statistics; Statistik;

    Abstract : This thesis which consists of four papers is concerned with estimation methods in factor analysis and structural equation models. New estimation methods are proposed and investigated.In paper I an approximation of the penalized maximum likelihood (ML) is introduced to fit an exploratory factor analysis model. READ MORE