{"id":6542,"date":"2025-07-15T13:34:48","date_gmt":"2025-07-15T13:34:48","guid":{"rendered":"https:\/\/functiontranslator.com\/fonction-inverse-loi-f-droite\/"},"modified":"2021-02-26T08:06:20","modified_gmt":"2021-02-26T08:06:20","slug":"f-inv-rt","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/fr\/f-inv-rt\/","title":{"rendered":"INVERSE.LOI.F.DROITE"},"content":{"rendered":"

Ce guide explicatif vous pr\u00e9sentera comment utiliser la fonction INVERSE.LOI.F.DROITE<\/strong>, \u00e9galement appel\u00e9e F.INV.RT<\/strong> dans Microsoft Excel. Elle trouve son utilit\u00e9 pour calculer le quantile droit de la distribution F de Fisher \u00e0 partir d’une probabilit\u00e9 donn\u00e9e. Cette fonction est particuli\u00e8rement pr\u00e9cieuse dans les analyses statistiques, notamment lors de l’\u00e9valuation d’hypoth\u00e8ses avec des statistiques F.<\/p>\n

Syntaxe de la fonction<\/h2>\n

La syntaxe de la fonction est la suivante :<\/p>\n

=INVERSE.LOI.F.DROITE(probabilit\u00e9; degr\u00e9s_libert\u00e91; degr\u00e9s_libert\u00e92)<\/code><\/pre>\n
    \n
  • probabilit\u00e9<\/strong> : La probabilit\u00e9 correspondant au quantile droit de la distribution F. Ceci indique la probabilit\u00e9 que la variable al\u00e9atoire F d\u00e9passe une valeur sp\u00e9cifique.<\/li>\n
  • degr\u00e9s_libert\u00e91<\/strong> : Le nombre de degr\u00e9s de libert\u00e9 pour le num\u00e9rateur.<\/li>\n
  • degr\u00e9s_libert\u00e92<\/strong> : Le nombre de degr\u00e9s de libert\u00e9 pour le d\u00e9nominateur.<\/li>\n<\/ul>\n
    Exemple :<\/strong><\/p>\n
    =INVERSE.LOI.F.DROITE(0.05; 10; 20)<\/code><\/pre>\n
    Cette formule calcule le quantile droit de la distribution F tel que la probabilit\u00e9 que la variable al\u00e9atoire F soit plus grande que cette valeur est de 0.05, avec 10 degr\u00e9s de libert\u00e9 dans le num\u00e9rateur et 20 dans le d\u00e9nominateur.<\/p>\n
    Applications pratiques<\/h2>\n
    Voici divers exemples d’applications de cette fonction dans des sc\u00e9narios r\u00e9els.<\/p>\n
    Comparaison de deux variances<\/h2>\n
    La fonction INVERSE.LOI.F.DROITE est utilis\u00e9e pour trouver des valeurs critiques du F lors de la comparaison des variances de deux \u00e9chantillons afin de d\u00e9terminer si elles diff\u00e8rent significativement.<\/p>\n\n\n\n
    Sc\u00e9nario<\/th>\nFormule<\/th>\nR\u00e9sultat<\/th>\n<\/tr>\n
    Calculer la valeur critique de F pour comparer les variances de deux \u00e9chantillons de tailles diff\u00e9rentes<\/td>\n=INVERSE.LOI.F.DROITE(0.05; 15; 15)<\/code><\/td>\nCalcule la valeur F \u00e0 laquelle la probabilit\u00e9 que F soit plus grande est de 0.05, avec 15 degr\u00e9s de libert\u00e9 pour chaque groupe.<\/td>\n<\/tr>\n<\/table>\n
    Cette valeur critique peut alors \u00eatre utilis\u00e9e comme seuil pour d\u00e9cider du r\u00e9sultat d’un test d’hypoth\u00e8se.<\/p>\n
    Test d’hypoth\u00e8se sur la variance<\/h2>\n
    Un autre usage courant est le test des hypoth\u00e8ses sur l\u2019\u00e9galit\u00e9 des variances de deux populations normales.<\/p>\n
    =INVERSE.LOI.F.DROITE(0.01; 20; 20)<\/code><\/pre>\n
    Cette formule d\u00e9termine la valeur critique de F pour un niveau de significativit\u00e9 de 0.01, pour des \u00e9chantillons ayant chacun 20 degr\u00e9s de libert\u00e9. Si la statistique F calcul\u00e9e est sup\u00e9rieure \u00e0 cette valeur critique, l’hypoth\u00e8se d\u2019\u00e9galit\u00e9 des variances est rejet\u00e9e \u00e0 un seuil de 1%.<\/p>\n
    En conclusion, la fonction INVERSE.LOI.F.DROITE est indispensable pour analyser et interpr\u00e9ter les variances entre deux s\u00e9ries de donn\u00e9es, facilitant ainsi des d\u00e9cisions \u00e9clair\u00e9es et fond\u00e9es sur des preuves statistiques.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Renvoie l\u2019inveRse de la distRibution de pRobabilit\u00e9 F<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[315],"tags":[],"class_list":["post-6542","post","type-post","status-publish","format-standard","hentry","category-statistiques"],"acf":[],"yoast_head":"\nFonction F.INV.RT (INVERSE.LOI.F.DROITE) dans Excel : comment \u00e7a marche, exemples et syntaxe<\/title>\n<meta name=\"description\" content=\"Pr\u00e9sentation de la fonction F.INV.RT (INVERSE.LOI.F.DROITE) d\u2019Excel et Google Sheets. 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