A number describing data.<\/p>\n\n\n\n
A sample statistic summarises some aspect of sample data, it is generally also treated as an estimate, perhaps a least worst estimate, of a “population parameter”. For example if the mean baseline CORE-OM score from a year of data collection in a service is 24.3 that is <\/em>the sample mean: it is <\/em>the total of all the scores divided by the number of scores, it is <\/em>an indicator of central location and be compared with that from another service. That is “descriptive statistics”. At the same time it may be regarded as a best guess of the mean for that service next year, or for all similar services: the population of interest to which perhaps we are interested in generalising this particular finding.<\/p>\n\n\n\n Confidence intervals (CI)<\/a> Mainly chapter 4 but the idea runs through all the subsequent chapters.<\/p>\n\n\n\n Created 2.xi.21, links tweaked 20.v.24.<\/p>\n","protected":false},"excerpt":{"rendered":" A number describing data. Details A sample statistic summarises some aspect of sample data, it is generally also treated as an estimate, perhaps a least worst estimate, of a “population parameter”. For example if the mean baseline CORE-OM score from a year of data collection in a service is 24.3 that is the sample mean: … Continue reading Statistic<\/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-2354","docs","type-docs","status-publish","hentry","doc_category-om-book"],"year_month":"2026-04","word_count":154,"total_views":"1198","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\/2354","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=2354"}],"version-history":[{"count":2,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/docs\/2354\/revisions"}],"predecessor-version":[{"id":4273,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/docs\/2354\/revisions\/4273"}],"wp:attachment":[{"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/media?parent=2354"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/doc_category?post=2354"},{"taxonomy":"glossaries","embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/glossaries?post=2354"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/doc_tag?post=2354"},{"taxonomy":"knowledge_base","embeddable":true,"href":"https:\/\/www.psyctc.org\/psyctc\/wp-json\/wp\/v2\/knowledge_base?post=2354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Try also<\/h4>\n\n\n\n
Descriptive statistics<\/a>
Estimate, estimation<\/a>
Generalisability<\/a>
Population<\/a>
Statistical power<\/p>\n\n\n\nChapters<\/h4>\n\n\n\n
Dates<\/h4>\n\n\n\n