CorrespondenceAnalysis(CA)isamultivariatestatisticaltechniqueusedtoanalyzeandvisualizetherelationshipsbetweencategoricalvariablesinacontingencytable.Ittransformsthedataintoalower-dimensionalspace,typicallytwodimensions,torevealpatternsandassociationsbetweenthecategoriesofthevariables.CAisparticularlyusefulforexploringthestructureoflargedatasetswithcategoricalvariables,asitprovidesagraphicalrepresentationthatmakesiteasiertointerprettherelationships.Themethodiswidelyappliedinfieldssuchasmarketing,socialsciences,ecology,andlinguisticstouncoverhiddenstructuresandtrendsincategoricaldata.TheoutputofCAincludesfactorscoresforrowsandcolumns,whichcanbeplottedonabiplottovisualizetheproximityandassociationsbetweencategories.Thismakesitapowerfultoolforexploratorydataanalysisandhypothesisgeneration.
