{"id":3416,"date":"2015-05-09T09:55:26","date_gmt":"2015-05-09T08:55:26","guid":{"rendered":"https:\/\/perruchenautomne.eu\/wordpress\/?p=3416"},"modified":"2015-05-09T09:55:26","modified_gmt":"2015-05-09T08:55:26","slug":"discussions-autour-de-la-p-value","status":"publish","type":"post","link":"https:\/\/perruchenautomne.eu\/wordpress\/2015\/05\/09\/discussions-autour-de-la-p-value\/","title":{"rendered":"Discussions autour de la P-Value"},"content":{"rendered":"<blockquote><p><a href=\"http:\/\/www.nature.com\/news\/statistics-p-values-are-just-the-tip-of-the-iceberg-1.17412?WT.ec_id=NATURE-20150430\"><img decoding=\"async\" class=\" size-full aligncenter\" src=\"https:\/\/perruchenautomne.eu\/wordpress\/wp-content\/uploads\/2015\/05\/P1.jpg\" alt=\"\" \/><\/a>Ridding science of shoddy statistics will require scrutiny of every step, not merely the last one, say Jeffrey T. Leek and Roger D. Peng.<\/p><\/blockquote>\n<p>Source\u00a0: <em><a href=\"http:\/\/www.nature.com\/news\/statistics-p-values-are-just-the-tip-of-the-iceberg-1.17412?WT.ec_id=NATURE-20150430\">Statistics: P values are just the tip of the iceberg : Nature News &amp; Comment<\/a><\/em><\/p>\n<p>Actuellement la mode est de bruler les statistiques inf\u00e9rentielles et en particulier la p-value. Une <a href=\"http:\/\/www.tandfonline.com\/doi\/abs\/10.1080\/01973533.2015.1012991\">revue a banni<\/a> cette approche, d&rsquo;autres ne veulent plus de p mais uniquement les intervalles de confiance, etc. Si vous suivez des statisticiens ou lisez un peu de litt\u00e9rature biom\u00e9dicale, depuis quelques semaines, c&rsquo;est un d\u00e9chainement.<\/p>\n<p>Je vous conseille la lecture de ce court article de Nature qui replace la probl\u00e9matique de fa\u00e7on beaucoup plus froide. L&rsquo;approche Bayesienne peut tout \u00e0 fait \u00eatre aussi biais\u00e9e et limit\u00e9e que l&rsquo;approche inf\u00e9rentielle si l&rsquo;ensemble du pipe-line avant l&rsquo;\u00e9tape analyse statistique est mauvais. On se focalise sur les statistiques en oubliant le reste de la m\u00e9thodologie, comme par exemple la production des donn\u00e9es ou leur lifting.<\/p>\n<p>Ce commentaire est bien venu pour nous rappeler que toute la chaine doit \u00eatre propre pour avoir des r\u00e9sultats utiles. Il ne suffit pas de bruler la p-value pour r\u00e9gler les probl\u00e8mes de la recherche biom\u00e9dicale, mais <a href=\"http:\/\/www.nature.com\/news\/scientific-method-statistical-errors-1.14700\">connaitre ses limites<\/a> et son utilit\u00e9.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ridding science of shoddy statistics will require scrutiny of every step, not merely the last one, say Jeffrey T. Leek and Roger D. Peng. Source\u00a0: Statistics: P values are just the tip of the iceberg : Nature News &amp; Comment &hellip; <a href=\"https:\/\/perruchenautomne.eu\/wordpress\/2015\/05\/09\/discussions-autour-de-la-p-value\/\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-3416","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1l1zM-T6","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/posts\/3416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/comments?post=3416"}],"version-history":[{"count":1,"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/posts\/3416\/revisions"}],"predecessor-version":[{"id":3418,"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/posts\/3416\/revisions\/3418"}],"wp:attachment":[{"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/media?parent=3416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/categories?post=3416"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perruchenautomne.eu\/wordpress\/wp-json\/wp\/v2\/tags?post=3416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}