{"id":5574,"date":"2025-07-15T13:34:45","date_gmt":"2025-07-15T13:34:45","guid":{"rendered":"https:\/\/functiontranslator.com\/f-inv-rt\/"},"modified":"2021-02-26T09:55:19","modified_gmt":"2021-02-26T09:55:19","slug":"f-inv-rt","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/cs\/f-inv-rt\/","title":{"rendered":"F.INV.RT"},"content":{"rendered":"

Co je to distribu\u010dn\u00ed funkce F-pravd\u011bpodobnosti a jej\u00ed inverze<\/h2>\n

Inverzn\u00ed F-pravd\u011bpodobnostn\u00ed funkce, zn\u00e1m\u00e1 v aplikac\u00edch jako Microsoft Excel a Google Sheets pod ozna\u010den\u00edm F.INV.RT<\/code>, slou\u017e\u00ed k ur\u010den\u00ed hodnoty, p\u0159i n\u00ed\u017e kumulativn\u00ed distribu\u010dn\u00ed funkce dosahuje ur\u010dit\u00e9 pravd\u011bpodobnosti. Tato funkce je velmi u\u017eite\u010dn\u00e1 zejm\u00e9na ve statistick\u00fdch anal\u00fdz\u00e1ch, kde se hodnot\u00ed distribuce podle F-distribuce, obvykle p\u0159i anal\u00fdze rozptylu (ANOVA).<\/p>\n

Syntaxe a pou\u017eit\u00ed funkce<\/h2>\n

Funkce F.INV.RT<\/code> v Microsoft Excel a Google Sheets je definov\u00e1na syntax\u00ed:<\/p>\n

F.INV.RT(pravd\u011bpodobnost, stup\u0148\u016f_volnosti1, stup\u0148\u016f_volnosti2)<\/code><\/pre>\n
Kde:<\/p>\n
    \n
  • pravd\u011bpodobnost<\/b> – Pravd\u011bpodobnost spojen\u00e1 s dvouocasovou pravd\u011bpodobnost\u00ed F-distribuce.<\/li>\n
  • stup\u0148\u016f_volnosti1<\/b> – Po\u010det stup\u0148\u016f volnosti \u010ditatele.<\/li>\n
  • stup\u0148\u016f_volnosti2<\/b> – Po\u010det stup\u0148\u016f volnosti jmenovatele.<\/li>\n<\/ul>\n
    Tato funkce vrac\u00ed hodnotu x, pro kterou je pravd\u011bpodobnost, \u017ee n\u00e1hodn\u00e1 prom\u011bnn\u00e1 s danou F-distribuc\u00ed p\u0159ekro\u010d\u00ed x, rovn\u00e1 specifikovan\u00e9 pravd\u011bpodobnosti.<\/p>\n
    Praktick\u00e9 p\u0159\u00edklady pou\u017eit\u00ed<\/h2>\n
    P\u0159\u00edklad \u010d. 1: Porovn\u00e1n\u00ed dvou skupin<\/h2>\n
    P\u0159edstavte si, \u017ee prov\u00e1d\u00edte anal\u00fdzu, ve kter\u00e9 porovn\u00e1v\u00e1te rozptyl mezi dv\u011bma nez\u00e1visl\u00fdmi skupinami. Skupina A m\u00e1 15 pozorov\u00e1n\u00ed a skupina B m\u00e1 20 pozorov\u00e1n\u00ed. P\u0159edpokl\u00e1d\u00e1te, \u017ee n\u011bjak\u00e1 ud\u00e1lost se ud\u00e1le s pravd\u011bpodobnost\u00ed 0.05 (5%). Jak\u00e1 je kritick\u00e1 F-hodnota?<\/p>\n
    = F.INV.RT(0.05, 14, 19)<\/code><\/pre>\n
    Tento v\u00fdsledek ud\u00e1v\u00e1 hodnotu F-statistiky, kter\u00e1 odd\u011bluje 5% nejvy\u0161\u0161\u00edch hodnot distribuce od ostatn\u00edch, co\u017e je kl\u00ed\u010dov\u00e9 pro rozhodnut\u00ed o statistick\u00e9 v\u00fdznamnosti.<\/p>\n
    P\u0159\u00edklad \u010d. 2: Sestaven\u00ed ANOVA tabulky<\/h2>\n
    Analyzujete rozd\u00edly ve v\u00fdkonu mezi t\u0159emi skupinami student\u016f na testu, p\u0159i\u010dem\u017e ka\u017ed\u00e1 skupina m\u00e1 10 student\u016f. Chcete ur\u010dit hodnotu F-statistiky na hladin\u011b v\u00fdznamnosti 0.01.<\/p>\n
    = F.INV.RT(0.01, 2, 27)<\/code><\/pre>\n
    Zde se pou\u017e\u00edvaj\u00ed 2 stupn\u011b volnosti pro rozd\u00edly mezi skupinami (3 skupiny – 1) a 27 stup\u0148\u016f volnosti pro chybu (30 \u00fa\u010dastn\u00edk\u016f – 3 skupiny). V\u00fdsledek funkce v\u00e1m sd\u011bl\u00ed, jakou hodnotu mus\u00ed F-statistika p\u0159ekro\u010dit, aby byla pova\u017eov\u00e1na za statisticky v\u00fdznamnou na \u00farovni 0.01.<\/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-5574","post","type-post","status-publish","format-standard","hentry","category-statisticke"],"acf":[],"yoast_head":"\nFunkce F.INV.RT v Excelu: jak funguje, primjeri kori\u0161tenja formule<\/title>\n<meta name=\"description\" content=\"Opis funkcije F.INV.RT u Excelu i Google tablicama. 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