Articles by Keyword: Multiple Regression Analysis

Search results for Multiple Regression Analysis

We found 374 results for you
  1. Die produksie van smutsvingergras in die wes‐transvaal<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Die produksie van Smutsvingergras (Digitaria eriantha) is in yerskeie proewe in die Hoëveldstreek, op Potchefstroom, in die verlede bepaal. Hierdie proewe is oor ‘n lang periode op verskillende grondsoorte en met verskillende bemestingspeile uitge‐voer. Alle resultate is saamgevoeg en met...
  2. Influences on life aspirations among adolescents in a low-income community in Cape Town, South Africa

    Influences on life aspirations among adolescents in a low-income community in Cape Town, South Africa

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    The aim of this study was to determine the influences on adolescents’ aspirations from a low-income community in Cape Town. A sequential mixed method exploratory design was used following two distinct phases. The qualitative phase comprised focus group interviews with...
  3. The effects of environment on the relationship between cotton fibre properties and yarn characteristics

    The effects of environment on the relationship between cotton fibre properties and yarn characteristics

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Cotton fibre samples from three different localities were commercially processed into 15 and 30 tex ring spun yarns and 20, 30 and 50 rotor spun yarns. Multiple regression analyses were used to relate yarn tenacity and irregularity to the different...
  4. Relations between phosphorus retention parameters and some other properties of benchmark soils in Lesotho

    Relations between phosphorus retention parameters and some other properties of benchmark soils in Lesotho

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The benchmark soils of Lesotho are characterized by high P retention and this aspect should be accommodated in fertilization programmes. This together with long procedures for determination of P retention parameters and a lack of information on the relations between...
  5. Application of Partial Least Squares regression to relate tastiness of boiled potatoes to chemical and physical tests

    Application of Partial Least Squares regression to relate tastiness of boiled potatoes to chemical and physical tests

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Partial Least Squares regression (PLS) was used to understand the relationship between 15 sensory attributes of potatoes boiled in their skins as dependent variables (Y), and six objective (chemical and physical) measurements as the independent variables (X). The ARC-Sensory Analysis...
  6. An investigation into the occurrence and nature of genotype by environment interaction in <em>Pinus patula</em>

    An investigation into the occurrence and nature of genotype by environment interaction in <em>Pinus patula</em>

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    This study was conducted as part of a joint venture between the tree improvement teams of Safcol and the CSIR to develop a breeding, production and conservation strategy for Pinus patula.
  7. Sex Differences in the Attribution of Shame And Guilt

    Sex Differences in the Attribution of Shame And Guilt

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study examined how the sex of a participant could moderate the elicitation of shame and guilt. Four hundred ninety students (107 men and 383 women) between the age of 17 and 20 (M=18.66, SD=.80) volunteered to participate. Moderated multiple...
  8. Genotype by environment interaction for volume growth at 6 years of age in a series of five <em>Pinus patula</em> progeny trials in southern Africa

    Genotype by environment interaction for volume growth at 6 years of age in a series of five <em>Pinus patula</em> progeny trials in southern Africa

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Genotype x environment interaction was investigated in a series of 5 Pinus patula progeny trials planted by the Institute for Commercial Forestry Research in southern Africa. The trials were established from Mpumalanga to the North-eastern Cape in a balanced 7x7...
  9. How a dependent variable's non-randomness affects taper equation fitting

    How a dependent variable's non-randomness affects taper equation fitting

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    In order to apply the least squares method in regression analysis, the values of the dependent variable Y should be random. In an example of regression analysis linear and nonlinear taper equations, which estimate the diameter of the tree dh...
  10. Imaging spectroscopy of foliar biochemistry in forestry environments

    Imaging spectroscopy of foliar biochemistry in forestry environments

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Remote sensing estimates of leaf biochemicals provide valuable information on ecosystem functioning, vitality and state at local to global spatial scales. This paper aims to give an overview of the state of the art of foliar biochemistry assessment in general...