@prefix n9j: <http://data.loterre.fr/ark:/67375/N9J> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .

n9j:-C8NQZ4GL-J
  skos:prefLabel "statistics and research methods"@en ;
  a skos:Concept ;
  skos:narrower n9j:-TZ7K5JQ4-Z .

n9j:-methods
  a isothes:ConceptGroup ;
  skos:prefLabel "methods"@en ;
  skos:member n9j:-TZ7K5JQ4-Z .

n9j:-MLXZQ22L-T
  skos:prefLabel "homogeneity of variance"@en ;
  a skos:Concept ;
  skos:broader n9j:-TZ7K5JQ4-Z .

n9j:-V240SPQD-X
  skos:prefLabel "homogeneity of regression"@en ;
  a skos:Concept ;
  skos:broader n9j:-TZ7K5JQ4-Z .

n9j:-TLBHFZ7R-R
  skos:prefLabel "statistical control"@en ;
  a skos:Concept ;
  skos:broader n9j:-TZ7K5JQ4-Z .

n9j: a skos:ConceptScheme .
n9j:-FGQ14PD7-7
  skos:prefLabel "F-ratio"@en ;
  a skos:Concept ;
  skos:broader n9j:-TZ7K5JQ4-Z .

n9j:-PW41QFJ7-W
  skos:prefLabel "dummy variables"@en ;
  a skos:Concept ;
  skos:broader n9j:-TZ7K5JQ4-Z .

n9j:-Q78M8VWZ-3
  skos:prefLabel "biostatistics and clinical epidemiology"@en ;
  a skos:Concept ;
  skos:narrower n9j:-TZ7K5JQ4-Z .

n9j:-RXS7VV30-6
  skos:prefLabel "quantitative data analysis"@en ;
  a skos:Concept ;
  skos:narrower n9j:-TZ7K5JQ4-Z .

n9j:-TZ7K5JQ4-Z
  skos:inScheme n9j: ;
  skos:broader n9j:-C8NQZ4GL-J, n9j:-Q78M8VWZ-3, n9j:-RXS7VV30-6 ;
  skos:narrower n9j:-KBGPG8QB-5, n9j:-FGQ14PD7-7, n9j:-MLXZQ22L-T, n9j:-GP6SDBBL-S, n9j:-PW41QFJ7-W, n9j:-TLBHFZ7R-R, n9j:-V240SPQD-X ;
  skos:prefLabel "analysis of covariance"@en ;
  skos:definition "Analysis of covariance (ANCOVA) is a combination of analysis of variance (ANOVA) and regression analysis because the model contains both quantitative and qualitative independent variables. The idea is to enhance the ANOVA model by adding one or more quantitative independent variables that are related to the dependent variable. [Source: Encyclopedia of Epidemiology; Analysis of Covariance]"@en ;
  a skos:Concept ;
  owl:sameAs <https://concepts.sagepub.com/social-science/concept/analysis_of_covariance> .

n9j:-KBGPG8QB-5
  skos:prefLabel "matched pairs"@en ;
  a skos:Concept ;
  skos:broader n9j:-TZ7K5JQ4-Z .

n9j:-GP6SDBBL-S
  skos:prefLabel "covariates"@en ;
  a skos:Concept ;
  skos:broader n9j:-TZ7K5JQ4-Z .