Methods in Mahalanobis-Taguchi (MT) System R package MTSYS version 1.2.0 Mahalanobis-Taguchi (MT) system is a collection of multivariate analysis methods developed for the field of quality engineering. MT system consists of two families depending on their purpose. One is a family of Mahalanobis-Taguchi (MT) methods (in the broad sense) for diagnosis (see Woodall, W. H., Koudelik, R., Tsui, K. L., Kim, S. B., Stoumbos, Z. G., and Carvounis, C. P. (2003) <doi:10.1198/004017002188618626>) and the other is a family of Taguchi (T) methods for forecasting (see Kawada, H., and Nagata, Y. (2015) <doi:10.17929/tqs.1.12>). The MT package contains three basic methods for the family of MT methods and one basic method for the family of T methods. The MT method (in the narrow sense), the Mahalanobis-Taguchi Adjoint (MTA) methods, and the Recognition-Taguchi (RT) method are for the MT method and the two-sided Taguchi (T1) method is for the family of T methods. In addition, the Ta and Tb methods, which are the improved versions of the T1 method, are included. Software Depends: R (>= 2.10) Imports: stats Suggests: testthat, covr Akifumi Okayama <akifumi.okayama@akane.waseda.jp> Comprehensive R Archive Network (CRAN) Akifumi Okayama [aut, cre], Masato Ohkubo [ctb], Yasushi Nagata [ctb] MIT + file LICENSE (https://CRAN.R-project.org/package=MTSYS/LICENSE) 2017-09-10 application/tgz https://CRAN.R-project.org/package=MTSYS doi:10.32614/CRAN.package.MTSYS