Package: npANCOVA 0.1.1

npANCOVA: Nonparametric ANCOVA Methods

Nonparametric methods for analysis of covariance (ANCOVA) are distribution-free and provide a flexible statistical framework for situations where the assumptions of parametric ANCOVA are violated or when the response variable is ordinal. This package implements several well-known nonparametric ANCOVA procedures, including Quade, Puri and Sen, McSweeney and Porter, Burnett and Barr, Hettmansperger and McKean, Shirley, and Puri-Sen-Harwell-Serlin. The package provides user-friendly functions to apply these methods in practice. These methods are described in Olejnik et al. (1985) <doi:10.1177/0193841X8500900104> and Harwell et al. (1988) <doi:10.1037/0033-2909.104.2.268>.

Authors:Mina Jahangiri [aut, cre], Ali Taghavi Rad [aut], Anoshirvan Kazemnejad [aut], Keith Goldfeld [ctb], Shayan Mostafaei [ctb]