{"id":7720,"date":"2019-05-22T15:59:54","date_gmt":"2019-05-22T15:59:54","guid":{"rendered":"http:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/deviance_statistic\/"},"modified":"2019-05-22T15:59:54","modified_gmt":"2019-05-22T15:59:54","slug":"deviance_statistic","status":"publish","type":"post","link":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/deviance_statistic\/","title":{"rendered":"Deviance statistic"},"content":{"rendered":"<p>Used in multilevel modelling, it is a statistic that follows the chi-square distribution, which is used to compare the fit of two models after one or more parameters have been added or deleted. &nbsp;The lower deviance, the better the fit. &nbsp;Many models can fit the data, and so the usual tactic is to obtain deviance for the full model and for a nested model, excluding some effects. &nbsp;A chi-square difference test can then be used to check whether the full model differs significantly from the fit of the nested model. &nbsp;If there is no difference, then the nested model is preferred as it is more parsimonious.<\/p>\n<p>See Multilevel modelling (MLM)  <\/p>\n<p><\/p>\n<p><\/p>\n<p><\/body><\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Used in multilevel modelling, it is a statistic that follows the chi-square distribution, which is used to compare the fit of two models after one or more parameters have been added or deleted. &nbsp;The lower deviance, the better the fit. &nbsp;Many models can fit the data, and so the usual tactic is to obtain deviance &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/deviance_statistic\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Deviance statistic&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2],"class_list":["post-7720","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-glossary","entry"],"_links":{"self":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts\/7720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/comments?post=7720"}],"version-history":[{"count":0,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts\/7720\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/media?parent=7720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/categories?post=7720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/tags?post=7720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}