{"id":4625,"date":"2026-08-12T15:44:20","date_gmt":"2026-08-12T13:44:20","guid":{"rendered":"https:\/\/ellistat.com\/?post_type=guide-dutilisateur&#038;p=4625"},"modified":"2026-08-12T15:44:20","modified_gmt":"2026-08-12T13:44:20","slug":"preparer-les-donnees","status":"publish","type":"guide-dutilisateur","link":"https:\/\/ellistat.com\/es\/guide-dutilisateur\/preparer-les-donnees\/","title":{"rendered":"Preparar los datos"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Les caract\u00e9ristiques proviennent de la&nbsp;<strong>grille<\/strong>&nbsp;du projet. Le s\u00e9lecteur en haut de page choisit celles \u00e0 \u00e9tudier.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Deux notions structurent la lecture et m\u00e9ritent d&rsquo;\u00eatre comprises avant tout :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L&rsquo;\u00e9chantillon<\/strong>\u00a0regroupe des mesures pr\u00e9lev\u00e9es ensemble ou un sous-groupe rationnel. C&rsquo;est lui qui fonde les cartes de contr\u00f4le.<\/li>\n\n\n\n<li><strong>La r\u00e9p\u00e9tition<\/strong>\u00a0distingue plusieurs mesures dans un m\u00eame \u00e9chantillon.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ce d\u00e9coupage d\u00e9termine le calcul de la dispersion\u00a0<strong>a corto plazo<\/strong>, celle qui r\u00e8gne \u00e0 l&rsquo;int\u00e9rieur d&rsquo;un \u00e9chantillon, par opposition \u00e0 la dispersion globale, qui inclut les d\u00e9rives d&rsquo;un \u00e9chantillon \u00e0 l&rsquo;autre. Toute la diff\u00e9rence entre Cp et Pp vient de l\u00e0 (voir l&rsquo;annexe).<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f Un d\u00e9coupage en \u00e9chantillons arbitraire fausse cette s\u00e9paration. Grouper des mesures qui n&rsquo;ont pas \u00e9t\u00e9 pr\u00e9lev\u00e9es ensemble gonfle la dispersion court terme et masque les d\u00e9rives.<\/p>\n<\/blockquote>","protected":false},"featured_media":0,"menu_order":20,"template":"","meta":{"_acf_changed":true},"menu-guide-dutilisateur":[22],"class_list":["post-4625","guide-dutilisateur","type-guide-dutilisateur","status-publish","hentry","menu-guide-dutilisateur-4-statistiques-descriptives"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pr\u00e9parer les donn\u00e9es - Ellistat<\/title>\n<meta name=\"description\" content=\"Comprendre la diff\u00e9rence entre \u00e9chantillon et r\u00e9p\u00e9tition, dispersion court terme et globale : la base pour bien pr\u00e9parer une analyse statistique fiable.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ellistat.com\/es\/guia-del-usuario\/preparer-les-donnees\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pr\u00e9parer les donn\u00e9es - 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