Neutrosophic Analysis Crossover Designs R package NeutroCODsAnalysis version 0.0.1 Provides methods for Neutrosophic Analysis of Variance (NANOVA) for crossover designs and multi-session designs with direct and residual effects using interval-valued observations. The package computes neutrosophic sums of squares, mean squares, interval-valued F-statistics, significance tests, and multiple comparisons using Least Significant Difference (LSD) procedures. For crisp data, users may enter identical lower and upper response values to obtain classical Analysis of Variance (ANOVA) results. The basic idea of neutrosophic statistics is obtained from Smarandache (2014) <https://fs.unm.edu/NeutrosophicStatistics.pdf>, while the analysis procedures implemented in this package are newly developed. Software Imports: MASS Vinaykumar L.N. <vinaymandya123@gmail.com> Comprehensive R Archive Network (CRAN) Neethu R.S [aut, ctb], Boyina Devi Priyanka [aut, ctb], Cini Varghese [aut, ctb], Mohd Harun [aut, ctb], Anindita Datta [aut, ctb], Vinaykumar L.N. [aut, cre] GPL (>= 2) 2026-06-09 application/tgz https://CRAN.R-project.org/package=NeutroCODsAnalysis doi:10.32614/CRAN.package.NeutroCODsAnalysis