{"id":2460,"date":"2024-10-08T15:41:13","date_gmt":"2024-10-08T13:41:13","guid":{"rendered":"https:\/\/ellistat.com\/?post_type=guide-dutilisateur&#038;p=2460"},"modified":"2026-08-13T15:20:21","modified_gmt":"2026-08-13T13:20:21","slug":"attributi","status":"publish","type":"guide-dutilisateur","link":"https:\/\/ellistat.com\/it\/guide-dutilisateur\/attributs\/","title":{"rendered":"Gage R&amp;R per attributi"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Quando il controllo consiste in un giudizio (OK\/KO), nella presenza di un difetto o nell\u2019aspetto, non c\u2019\u00e8 alcuna misura da scomporre. In tal caso si misura la\u00a0<strong>concordanza<\/strong>\u00a0tra i controllori e nei confronti di un\u00a0<strong>standard<\/strong>\u00a0redatto da un esperto.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ogni controllore esamina pi\u00f9 volte ogni pezzo. L'inserimento avviene con un clic:&nbsp;<strong>Clicca per OK, Ctrl+clic per KO<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"468\" src=\"https:\/\/ellistat.com\/wp-content\/uploads\/retr-attribut.png\" alt=\"\" class=\"wp-image-4530\" srcset=\"https:\/\/ellistat.com\/wp-content\/uploads\/retr-attribut.png 964w, https:\/\/ellistat.com\/wp-content\/uploads\/retr-attribut-300x146.png 300w, https:\/\/ellistat.com\/wp-content\/uploads\/retr-attribut-768x373.png 768w, https:\/\/ellistat.com\/wp-content\/uploads\/retr-attribut-18x9.png 18w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Gli indicatori:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"348\" src=\"https:\/\/ellistat.com\/wp-content\/uploads\/indicateurs.png\" alt=\"\" class=\"wp-image-4531\" srcset=\"https:\/\/ellistat.com\/wp-content\/uploads\/indicateurs.png 964w, https:\/\/ellistat.com\/wp-content\/uploads\/indicateurs-300x108.png 300w, https:\/\/ellistat.com\/wp-content\/uploads\/indicateurs-768x277.png 768w, https:\/\/ellistat.com\/wp-content\/uploads\/indicateurs-18x6.png 18w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ripetibilit\u00e0<\/strong>\u00a0: un controllore si valuta allo stesso modo da un passaggio all\u2019altro?<\/li>\n\n\n\n<li><strong>Accordo globale<\/strong>\u00a0\/\u00a0<strong>concordanza complessiva<\/strong>\u00a0: tutti i controllori e la centrale di comunicazione sono d'accordo?<\/li>\n\n\n\n<li><strong>Kappa<\/strong>\u00a0: la concordanza corretta per il caso. Due controllori che dichiarano tutto conforme concordano al 100% (%) senza controllare nulla; il Kappa, invece, non si sbaglia. La soglia scelta \u00e8\u00a0<strong>0,75<\/strong>.<\/li>\n\n\n\n<li><strong>Kappa tra tutti i controller<\/strong>\u00a0e\u00a0<strong>Kappa contro lo standard<\/strong>\u00a0: il primo indica se sono coerenti tra loro, il secondo se hanno ragione. Dei controllori molto coerenti ma tutti errati danno un Kappa eccellente tra loro e un Kappa scarso rispetto allo standard.<\/li>\n\n\n\n<li><strong>Efficacia<\/strong>,\u00a0<strong>tasso di errore<\/strong>,\u00a0<strong>tasso di falsi allarmi<\/strong>\u00a0: rispettivamente la percentuale di giudizi corretti, gli errori non rilevati e i pezzi conformi respinti.<\/li>\n\n\n\n<li><strong>Pi\u00f9 rigoroso \/ meno rigoroso<\/strong>\u00a0: il grado di severit\u00e0 di ciascun controllore. Un controllore sistematicamente pi\u00f9 severo genera scarti inutili; se invece \u00e8 pi\u00f9 permissivo, lascia passare dei difetti.<\/li>\n\n\n\n<li>Le\u00a0<strong>riepilogo per operatore<\/strong>\u00a0articoli ispezionati, classificati e percentuale, per ogni addetto al controllo.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udca1 Distinguere questi due errori \u00e8 importante dal punto di vista economico: un falso allarme costa un pezzo funzionante, un errore costa un cliente. Non hanno lo stesso prezzo, e la regolazione del criterio di controllo deve tenerne conto.<\/p>","protected":false},"featured_media":2500,"menu_order":0,"template":"","meta":{"_acf_changed":true},"menu-guide-dutilisateur":[20],"class_list":["post-2460","guide-dutilisateur","type-guide-dutilisateur","status-publish","has-post-thumbnail","hentry","menu-guide-dutilisateur-2-gage-r-r"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Gage R&amp;R par attributs - Ellistat<\/title>\n<meta name=\"description\" content=\"Comment r\u00e9aliser une \u00e9tude Gage R&amp;R sur des donn\u00e9es attributs avec Ellistat ? 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