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Factor Analysis
Graffelman, Jan
Universitat Politècnica de Catalunya. Departament d'Estadística i Investigació Operativa; Universitat Politècnica de Catalunya. LIAM - Laboratori de Modelització i Anàlisi de la Informació
Factor analysis is a multivariate statistical method for data reduction that originated in psychometrics and has found applications in many branches of science. The method aims to describe the correlation structure between a large set of observed variables in terms of a few underlying latent variables called factors. Factor analysis employs a specific model, where observed variables are modelled as linear combinations of common factors plus a specific error term. This model can be estimated by using principal components, by using the iterative principal factor method, or by maximum likelihood. After estimation, factors may be rotated in order to improve their interpretation. An example of the application of factor analysis to a set of pollutants in an environmental monitoring study is discussed.
Àrees temàtiques de la UPC::Economia i organització d'empreses
Factor analysis
Anàlisi factorial
Attribution-NonCommercial-NoDerivs 3.0 Spain

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