{"id":2442,"date":"2021-11-07T14:20:44","date_gmt":"2021-11-07T14:20:44","guid":{"rendered":"https:\/\/www.psyctc.org\/psyctc\/?post_type=docs&#038;p=2442"},"modified":"2024-08-16T09:35:34","modified_gmt":"2024-08-16T07:35:34","password":"","slug":"standard-deviation-sd","status":"publish","type":"docs","link":"https:\/\/www.psyctc.org\/psyctc\/glossary2\/standard-deviation-sd\/","title":{"rendered":"Standard Deviation (SD)"},"content":{"rendered":"\n<p>This is probably the most quoted measure of dispersion and it&#8217;s just the square root of the variance of a set of data.  See <a href=\"https:\/\/www.psyctc.org\/psyctc\/glossary2\/variance\/\" title=\"\">Variance: introduction<\/a> and, for the details, <a href=\"https:\/\/www.psyctc.org\/psyctc\/glossary2\/variance-2\/\" title=\"\">Variance: computation and bias<\/a> (and perhaps <a href=\"https:\/\/www.psyctc.org\/psyctc\/glossary2\/square-root\/\" title=\"\">Square root<\/a>).<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Try also<\/h4>\n\n\n\n<p><a href=\"https:\/\/www.psyctc.org\/psyctc\/glossary2\/variance\/\" title=\"\">Variance: introduction<\/a><br><a href=\"https:\/\/www.psyctc.org\/psyctc\/glossary2\/variance-2\/\" title=\"\">Variance: computation and bias<\/a><br><a href=\"https:\/\/www.psyctc.org\/psyctc\/glossary2\/square-root\/\" title=\"\">Square root<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Chapters<\/h4>\n\n\n\n<p>Dispersion underpins pretty much all statistical methods so SD is implicit in Chapter 5.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Online resources<\/h4>\n\n\n\n<p>My shiny app <a href=\"https:\/\/shiny.psyctc.org\/apps\/CISD\/\">that gives you a confidence interval (CI) around an observed standard deviation<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Dates<\/h4>\n\n\n\n<p>First created 14.iii.24, replacing an earlier even more minimal entry, links updated 16.viii.24.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is probably the most quoted measure of dispersion and it&#8217;s just the square root of the variance of a set of data. See Variance: introduction and, for the details, Variance: computation and bias (and perhaps Square root). Try also Variance: introductionVariance: computation and biasSquare root Chapters Dispersion underpins pretty much all statistical methods so &hellip; <a href=\"https:\/\/www.psyctc.org\/psyctc\/glossary2\/standard-deviation-sd\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Standard Deviation (SD)<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"doc_category":[18],"glossaries":[],"doc_tag":[],"knowledge_base":[],"class_list":["post-2442","docs","type-docs","status-publish","hentry","doc_category-om-book"],"year_month":"2026-04","word_count":91,"total_views":"1247","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"chris","author_nicename":"chris","author_url":"https:\/\/www.psyctc.org\/psyctc\/author\/chris\/"},"doc_category_info":[{"term_name":"All OM book glossary entries","term_url":"https:\/\/www.psyctc.org\/psyctc\/glossary\/non-knowledgebase\/om-book\/"}],"doc_tag_info":[],"knowledge_base_info":[],"knowledge_base_slug":[],"_links":{"self":[{"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/docs\/2442","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/comments?post=2442"}],"version-history":[{"count":3,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/docs\/2442\/revisions"}],"predecessor-version":[{"id":4380,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/docs\/2442\/revisions\/4380"}],"wp:attachment":[{"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/media?parent=2442"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/doc_category?post=2442"},{"taxonomy":"glossaries","embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/glossaries?post=2442"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/doc_tag?post=2442"},{"taxonomy":"knowledge_base","embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/knowledge_base?post=2442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}