{"id":4656,"date":"2026-08-12T16:59:25","date_gmt":"2026-08-12T14:59:25","guid":{"rendered":"https:\/\/ellistat.com\/?post_type=guide-dutilisateur&#038;p=4656"},"modified":"2026-08-12T16:59:25","modified_gmt":"2026-08-12T14:59:25","slug":"piano-di-scansione","status":"publish","type":"guide-dutilisateur","link":"https:\/\/ellistat.com\/it\/guide-dutilisateur\/plan-de-balayage\/","title":{"rendered":"Piano di spazzamento"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Lo screening risponde a un'unica domanda,\u00a0<strong>Quali dei miei fattori sono rilevanti?<\/strong>\u00a0 e si accetta di confondere tutto il resto pur di rispondere con il minor numero possibile di tentativi.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"644\" height=\"298\" src=\"https:\/\/ellistat.com\/wp-content\/uploads\/balayage.png\" alt=\"\" class=\"wp-image-4657\" srcset=\"https:\/\/ellistat.com\/wp-content\/uploads\/balayage.png 644w, https:\/\/ellistat.com\/wp-content\/uploads\/balayage-300x139.png 300w, https:\/\/ellistat.com\/wp-content\/uploads\/balayage-18x8.png 18w\" sizes=\"auto, (max-width: 644px) 100vw, 644px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">L'impostazione \u00abNumero massimo di livelli\u00bb offre la possibilit\u00e0 di scegliere tra 2 o 3 e modifica completamente la gamma di piani disponibili.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A 2 livelli<\/strong>&nbsp;: le tabelle L4, L8, L12, L16, L20 a seconda del numero di fattori. Fino a 19 fattori in 20 prove.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A 3 livelli<\/strong>&nbsp;: i&nbsp;<strong>DSD<\/strong>&nbsp;(<em>Progetto definitivo di screening<\/em>), da DSD3 a DSD12, oltre a L9 e L18. La tabella dei fattori richiede quindi tre livelli: min, punto centrale, max.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udca1 Il DSD \u00e8 il piano di screening moderno e merita di essere conosciuto: articolato su tre livelli e con un costo delle analisi simile a quello di un piano a due livelli, esso\u00a0<strong>rileva parzialmente la curvatura<\/strong>\u00a0e non confonde gli effetti principali con le interazioni di secondo ordine. In pratica, evita la classica trappola dello screening a due livelli, ovvero concludere che \u00abquesto fattore non ha alcun effetto\u00bb quando in realt\u00e0 la sua risposta raggiunge un massimo all\u2019interno dell\u2019intervallo e assume lo stesso valore ai due estremi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f Un piano di screening non \u00e8 un piano di modellizzazione. Indica i possibili candidati; non ne quantifica propriamente gli effetti e non \u00e8 concepito per l\u2019ottimizzazione. L\u2019assistente \u00abCome scegliere?\u00bb lo esclude esplicitamente da questi obiettivi: \u00abAdatto esclusivamente allo screening, non alla modellizzazione o all\u2019ottimizzazione\u00bb.<\/p>","protected":false},"featured_media":0,"menu_order":70,"template":"","meta":{"_acf_changed":true},"menu-guide-dutilisateur":[24],"class_list":["post-4656","guide-dutilisateur","type-guide-dutilisateur","status-publish","hentry","menu-guide-dutilisateur-7-doe-plans-dexperiences"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Plan de balayage - Ellistat<\/title>\n<meta name=\"description\" content=\"Identifiez rapidement les facteurs qui comptent avec un plan de criblage \u00e0 2 niveaux ou un DSD \u00e0 3 niveaux, qui d\u00e9tecte aussi la courbure. 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