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	Robust Correspondence Analysis	Robust explorativ faktoranalys
Ämnesområde	Statistik	Psykometri
Familj	Latent structure	Latent structure
Ursprungsår	2000s (robust extensions of CA developed since the early 2000s)	2000–2003
Upphovsperson	Greenacre (CA); robust extensions by Croux, Ruiz-Gazen and colleagues	Pison, Rousseeuw, Filzmoser, and Croux; Yuan and Bentler (parallel streams)
Typ	Robust dimension reduction for contingency tables	Latent variable / dimension reduction (robust)
Ursprungskälla	Croux, C. & Ruiz-Gazen, A. (2005). High breakdown estimators for principal components: the projection-pursuit approach revisited. Journal of Multivariate Analysis, 95(1), 206–226.	Yuan, K.-H., & Bentler, P. M. (2000). Robust mean and covariance structure analysis through iteratively reweighted least squares. Psychometrika, 65(1), 43–58.
Alias	RCA, outlier-resistant correspondence analysis, robust CA	robust EFA, robust factor analysis, outlier-resistant factor analysis, EFA with robust estimation
Närliggande	5	4
Sammanfattning	Robust Correspondence Analysis (RCA) extends classical correspondence analysis to contingency tables that contain outlying rows or columns. By replacing the standard singular value decomposition with a robust alternative, RCA produces biplots and coordinate maps that accurately reflect the dominant association structure even when atypical cells or categories exert undue influence on the standard solution.	Robust exploratory factor analysis discovers the latent factor structure of a set of items using estimation methods that are resistant to outliers and violations of multivariate normality. It applies the same measurement model as standard EFA but replaces classical covariance estimation with robust counterparts — such as minimum covariance determinant or iteratively reweighted least squares — so that a small fraction of atypical cases cannot distort the recovered factor loadings.