Herath, K.Samita, S.Wijesuriya, W.2014-11-122014-11-122013Tropical Agricultural Research, 25(01):p.109-119https://dl.nsf.gov.lk/handle/1/12528AgricultureModel selectionAshley and patterson modelDiagnostic toolModel evaluationNatural rubberPricesARCHGARCH family modelsEvaluation of Ashley and patterson model diagnostic tool in selection of ARCH/GARCH family models:case of natural rubber prices at the Colombo auctionA