Menéndez Calleja, María LuisaPardo Llorente, Julio ÁngelPardo Llorente, Leandro2023-06-202023-06-2020070377-042710.1016/j.cam.2006.02.034https://hdl.handle.net/20.500.14352/50222In this paper we consider the family of phi-divergence test statistics, T-n(phi,S), for the problem of symmetry in I x I contingency tables whose asymptotic distribution is chi-square with I (I - 1)/2 degrees of freedom and we propose a moment-corrected phi-divergence test statistic in order to improve the accuracy of the chi-square approximation of the distribution of T,T-n(phi,S) under the hypothesis of symmetry.engjournal articlehttp://www.sciencedirect.com/science/article/pii/S0377042706001427http://www.sciencedirect.comrestricted access519.237SymmetryContingency tablePhi-divergence test statisticCorrected phi-divergence test statisticEstadística matemática (Matemáticas)1209 Estadística