{"id":5573,"date":"2025-07-15T13:34:45","date_gmt":"2025-07-15T13:34:45","guid":{"rendered":"https:\/\/functiontranslator.com\/f-inv\/"},"modified":"2021-02-26T09:55:18","modified_gmt":"2021-02-26T09:55:18","slug":"f-inv","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/cs\/f-inv\/","title":{"rendered":"F.INV"},"content":{"rendered":"

P\u0159ehled funkc\u00ed pro inverzn\u00ed distribu\u010dn\u00ed funkce F<\/h2>\n

Funkce F.INV v aplikac\u00edch MS Excel a Google Sheets je ur\u010dena k z\u00edsk\u00e1n\u00ed inverzn\u00ed hodnoty F-distribuce, co\u017e je kl\u00ed\u010dov\u00e9 pro realizaci statistick\u00fdch test\u016f, jako je anal\u00fdza rozptylu (ANOVA). Tato funkce umo\u017e\u0148uje ur\u010dit hodnoty prom\u011bnn\u00e9, p\u0159i kter\u00fdch doch\u00e1z\u00ed ke p\u0159ekro\u010den\u00ed ur\u010dit\u00e9ho percentilu distribuce.<\/p>\n

Celkov\u00fd popis a syntaxe<\/h2>\n

Syntaxe funkce F.INV se prezentuje n\u00e1sleduj\u00edc\u00ed formou:<\/p>\n

<\/code><\/pre>\n
    \n
  • pravd\u011bpodobnost<\/strong> – Pravd\u011bpodobnost spojen\u00e1 s dvouocasou F-distribuc\u00ed.<\/li>\n
  • stupn\u011b_svobody_1<\/strong> – Stupn\u011b svobody pro \u010ditatel.<\/li>\n
  • stupn\u011b_svobody_2<\/strong> – Stupn\u011b svobody pro jmenovatel.<\/li>\n<\/ul>\n
    P\u0159\u00edklad pou\u017eit\u00ed:<\/p>\n
    =F.INV(0.05, 10, 20)<\/code><\/pre>\n
    Tento p\u0159\u00edklad vr\u00e1t\u00ed hodnotu F-distribuce pro 5% pravd\u011bpodobnost s 10 stupni svobody v \u010ditateli a 20 stupni svobody v jmenovateli.<\/p>\n
    P\u0159\u00edklad praktick\u00e9ho vyu\u017eit\u00ed v re\u00e1ln\u00fdch situac\u00edch<\/h2>\n
    Zde jsou dva praktick\u00e9 p\u0159\u00edklady, kdy je funkce F.INV u\u017eite\u010dn\u00e1.<\/p>\n
    Analyza rozptylu (ANOVA)<\/h2>\n
    P\u0159i prov\u00e1d\u011bn\u00ed ANOVA testu ke zkoum\u00e1n\u00ed rozd\u00edlu st\u0159edn\u00edch hodnot mezi t\u0159emi skupinami s 2 stupni svobody v \u010ditateli a 27 stupni svobody v jmenovateli m\u016f\u017eete cht\u00edt ur\u010dit kritickou hodnotu F-statistiky pro \u00farove\u0148 v\u00fdznamnosti 0.05.<\/p>\n
    =F.INV(0.95, 2, 27)<\/code><\/pre>\n
    V\u00fdsledek ud\u00e1v\u00e1 hodnotu F-statistiky, p\u0159i n\u00ed\u017e je rozd\u00edl mezi skupinami statisticky v\u00fdznamn\u00fd na \u00farovni 0.05. Pokud je vypo\u010d\u00edtan\u00e1 F-statistika z va\u0161\u00ed ANOVA vy\u0161\u0161\u00ed ne\u017e tato hodnota, m\u016f\u017eete zam\u00edtnout nulovou hypot\u00e9zu.<\/p>\n
    Nastaven\u00ed interval\u016f spolehlivosti<\/h2>\n
    V situaci, kdy je pot\u0159eba nastavit 95% interval spolehlivosti pro pom\u011br rozptyl\u016f dvou vzork\u016f s 15 a 20 stupni svobody, m\u016f\u017eete vyu\u017e\u00edt F.INV k ur\u010den\u00ed krajn\u00edch hodnot F-distribuce pro dan\u00e9 stupn\u011b svobody.<\/p>\n
    Doln\u00ed hranice = 1 \/ F.INV(0.975, 20, 15) Horn\u00ed hranice = F.INV(0.975, 15, 20)<\/code><\/pre>\n
    Takto lze stanovit doln\u00ed a horn\u00ed hranici 95% intervalu spolehlivosti pro pom\u011br rozptyl\u016f dvou odli\u0161n\u00fdch vzork\u016f.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Vr\u00e1t\u00ed hodnotu inverzn\u00ed funkce k\u00a0distribu\u010dn\u00ed funkci rozd\u011blen\u00ed\u00a0F<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[287],"tags":[],"class_list":["post-5573","post","type-post","status-publish","format-standard","hentry","category-statisticke"],"acf":[],"yoast_head":"\nFunkce F.INV v Excelu: jak funguje, primjeri kori\u0161tenja formule<\/title>\n<meta name=\"description\" content=\"Opis funkcije F.INV u Excelu i Google tablicama. 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