{"id":5846,"date":"2025-07-15T13:34:45","date_gmt":"2025-07-15T13:34:45","guid":{"rendered":"https:\/\/functiontranslator.com\/t-inv\/"},"modified":"2021-02-26T10:04:46","modified_gmt":"2021-02-26T10:04:46","slug":"t-inv","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/cs\/t-inv\/","title":{"rendered":"T.INV"},"content":{"rendered":"

P\u0159ehled funkce pro inverzn\u00ed rozd\u011blen\u00ed t<\/h2>\n

Funkce T.INV<\/code> se v MS Excel a Google Sheets pou\u017e\u00edv\u00e1 k nalezen\u00ed inverzn\u00ed hodnoty Studentova t-rozd\u011blen\u00ed. Je to d\u016fle\u017eit\u00fd n\u00e1stroj ve statistice, zejm\u00e9na p\u0159i prov\u00e1d\u011bn\u00ed test\u016f hypot\u00e9z a p\u0159i v\u00fdpo\u010dtech interval\u016f spolehlivosti.<\/p>\n

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

Syntaxe funkce T.INV<\/code> v Excelu a Google Sheets je:<\/p>\n

T.INV(pravd\u011bpodobnost, stupn\u011b_voli) <\/code><\/pre>\n
    \n
  • pravd\u011bpodobnost<\/strong> – Pravd\u011bpodobnost odpov\u00eddaj\u00edc\u00ed lev\u00e9 \u010d\u00e1sti Studentova t-rozd\u011blen\u00ed. Tato hodnota by m\u011bla b\u00fdt mezi 0 a 1.<\/li>\n
  • stupn\u011b_voli<\/strong> – Po\u010det stup\u0148\u016f volnosti t-rozd\u011blen\u00ed, kter\u00fd m\u00e1 b\u00fdt pou\u017eit.<\/li>\n<\/ul>\n
    P\u0159\u00edklady pou\u017eit\u00ed<\/h2>\n
    N\u00ed\u017ee jsou uvedeny konkr\u00e9tn\u00ed p\u0159\u00edklady pou\u017eit\u00ed funkce T.INV<\/code> v praktick\u00fdch situac\u00edch.<\/p>\n
    V\u00fdpo\u010det kritick\u00e9 hodnoty t-statistiky<\/h2>\n
    P\u0159edstavme si, \u017ee pot\u0159ebujeme zjistit kritickou hodnotu pro jednostrann\u00fd t-test s pravd\u011bpodobnost\u00ed chyby typu I (alfa) 0.05 a 29 stupni volnosti.<\/p>\n
    =T.INV(1 - 0.05, 29)<\/code><\/pre>\n
    V tomto p\u0159\u00edkladu hled\u00e1me kritickou hodnotu, kter\u00e1 odpov\u00edd\u00e1 95% pravd\u011bpodobnosti (1 – 0.05 = 0.95) v t-rozd\u011blen\u00ed se 29 stupni volnosti. Hodnota n\u00e1m \u0159\u00edk\u00e1, kde by hodnoty t-statistiky m\u011bly b\u00fdt pova\u017eov\u00e1ny za statisticky v\u00fdznamn\u00e9 p\u0159i alf\u011b 0.05.<\/p>\n
    Nastaven\u00ed intervalu spolehlivosti pro st\u0159edn\u00ed hodnotu<\/h2>\n
    P\u0159i nastavov\u00e1n\u00ed 95% intervalu spolehlivosti pro st\u0159edn\u00ed hodnotu z vzorku s 15 stupni volnosti pou\u017eijeme funkci T.INV<\/code>.<\/p>\n
    t_krit = T.INV(1 - 0.05\/2, 15) \/\/ d\u011blen\u00ed alfa na 2 pro dvoustrann\u00fd test<\/code><\/pre>\n
    Nastav\u00edme pravd\u011bpodobnost na 0.975 (1 – 0.05\/2), aby byly zahrnuty krajn\u00ed hodnoty z obou konc\u016f distribuce, a pou\u017eijeme 15 stup\u0148\u016f volnosti odpov\u00eddaj\u00edc\u00edch na\u0161\u00ed vzorkov\u00e9 velikosti minus jeden. V\u00fdsledn\u00e1 hodnota n\u00e1m umo\u017en\u00ed vyhradit interval spolehlivosti kolem odhadovan\u00e9 st\u0159edn\u00ed hodnoty.<\/p>\n
    Shrnut\u00ed<\/h2>\n
    Funkce T.INV<\/code> v Excelu a Google Sheets je kl\u00ed\u010dov\u00e1 pro statistickou anal\u00fdzu, obzvl\u00e1\u0161t\u011b p\u0159i ur\u010dov\u00e1n\u00ed kritick\u00fdch bod\u016f pro t-testy a p\u0159i konstrukci interval\u016f spolehlivosti. S jej\u00edmi mo\u017enostmi a p\u0159esnost\u00ed je nezbytn\u00fdm n\u00e1strojem pro ka\u017ed\u00e9ho, kdo se zab\u00fdv\u00e1 statistikou nebo datovou anal\u00fdzou.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Vr\u00e1t\u00ed hodnotu t distribu\u010dn\u00ed funkce Studentova t-rozd\u011blen\u00ed jako funkci pravd\u011bpodobnosti a\u00a0stup\u0148\u016f volnosti<\/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-5846","post","type-post","status-publish","format-standard","hentry","category-statisticke"],"acf":[],"yoast_head":"\nFunkce T.INV v Excelu: jak funguje, primjeri kori\u0161tenja formule<\/title>\n<meta name=\"description\" content=\"Opis funkcije T.INV u Excelu i Google tablicama. 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