Shongwe, Sandile CharlesGraham, Marien Alet2016-10-112017S.C. Shongwe & M.A. Graham (2017) A letter to the editor about “Machado, M.A.G. and Costa A.F.B. (2014), some comments regarding the synthetic chart. Communications in Statistics---Theory and Methods, 43(14), 2897–2906”, Communications in Statistics - Theory and Methods, 46:21, 10476-10480, DOI: 10.1080/03610926.2016.1236958.0361-0926 (print)1532-415X (online)10.1080/03610926.2016.1236958http://hdl.handle.net/2263/57098No abstract available.en© 2016 Taylor and Francis. This is an electronic version of an article published in Communications in Statistics Theory and Methods , vol. 43, no. 14, pp. 2897-2906, 2017. doi : 10.1080/03610926.2016.1236958. Communications in Statistics Theory and Methods is available online at : http://www.tandfonline.comloi/lsta20.Synthetic chartNon-side sensitive (NSS)Standard side-sensitive (SSS)Revised side-sensitive (RSS)Modified sidesensitive (MSS)Postprint Article