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Markov chain or integral equation methods have been extensively applied in the design phase of conventional control charts. However, for distribution\u2010free schemes, due to the discrete nature of the statistics being used (such as the sign or the Wilcoxon signed rank statistics, for instance), it is impossible to accurately compute their run length properties. In this work, a modified distribution\u2010free phase II exponentially weighted moving average (EWMA)\u2010type chart based on the Wilcoxon signed rank statistic is considered and its <jats:italic>exact<\/jats:italic> run length properties are discussed. A continuous transformation of the Wilcoxon signed rank statistic, combined with the classical Markov chain method, is used for the determination of the average run length in the in\u2010 and out\u2010of control cases. Moreover, its exact performance is derived without any knowledge of the distribution of sample observations. Finally, an illustrative example is provided showing the practical implementation of our proposed\u00a0chart.<\/jats:p>","DOI":"10.1002\/qre.2795","type":"journal-article","created":{"date-parts":[[2020,11,11]],"date-time":"2020-11-11T15:38:59Z","timestamp":1605109139000},"page":"1266-1284","update-policy":"https:\/\/2.zoppoz.workers.dev:443\/https\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["An EWMA signed ranks control chart with reliable run length performances"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/2.zoppoz.workers.dev:443\/https\/orcid.org\/0000-0002-1129-0432","authenticated-orcid":false,"given":"Theodoros","family":"Perdikis","sequence":"first","affiliation":[{"name":"Department of Statistics and Laboratory of Statistical Methodology Athens University of Economics and Business, Athens  Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/2.zoppoz.workers.dev:443\/https\/orcid.org\/0000-0001-5283-5438","authenticated-orcid":false,"given":"Stelios","family":"Psarakis","sequence":"additional","affiliation":[{"name":"Department of Statistics and Laboratory of Statistical Methodology Athens University of Economics and Business, Athens  Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/2.zoppoz.workers.dev:443\/https\/orcid.org\/0000-0002-9532-4029","authenticated-orcid":false,"given":"Philippe","family":"Castagliola","sequence":"additional","affiliation":[{"name":"Universit\u00e9 de Nantes &amp; LS2N UMR CNRS 6004  Nantes France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/2.zoppoz.workers.dev:443\/https\/orcid.org\/0000-0002-7477-5947","authenticated-orcid":false,"given":"Petros E.","family":"Maravelakis","sequence":"additional","affiliation":[{"name":"Department of Business Administration University of Piraeus  Piraeus Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,11,11]]},"reference":[{"key":"e_1_2_6_2_1","volume-title":"Statistical Method from the Viewpoint of Quality Control","author":"Shewhart WA","year":"1939"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1080\/00401706.1959.10489860"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.2307\/2333009"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1080\/00224065.2001.11980081"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1080\/00224065.2018.1404315"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1080\/08982112.2018.1549330"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1080\/03610919108812996"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1080\/08982112.2011.575745"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.eswa.2010.11.044"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jprocont.2014.05.001"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1080\/02533839.2014.955975"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/qre.1673"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1080\/03610918.2017.1422750"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1080\/00224065.2010.11917817"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.csda.2011.02.013"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/qre.1968"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/qre.2048"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/qre.2560"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/qre.2706"},{"key":"e_1_2_6_21_1","doi-asserted-by":"crossref","unstructured":"MabudeK Malela\u2010MajikaJC CastagliolaP ShongweSC. 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