{"id":5847,"date":"2025-07-15T13:34:45","date_gmt":"2025-07-15T13:34:45","guid":{"rendered":"https:\/\/functiontranslator.com\/t-inv-2t\/"},"modified":"2021-02-26T10:04:49","modified_gmt":"2021-02-26T10:04:49","slug":"t-inv-2t","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/cs\/t-inv-2t\/","title":{"rendered":"T.INV.2T"},"content":{"rendered":"

Funkce T.INV.2T<\/strong> je u\u017eite\u010dn\u00e1 statistick\u00e1 funkce v programu MS Excel a tak\u00e9 v Google Sheets, slou\u017e\u00edc\u00ed k v\u00fdpo\u010dtu inverzn\u00ed hodnoty dvouocas\u00e9ho Studentova t-rozlo\u017een\u00ed. Tato funkce je \u010dasto vyu\u017e\u00edv\u00e1na v oblastech jako finan\u010dn\u00ed anal\u00fdza, kontrola kvality nebo v\u00fdzkum, kdy je pot\u0159eba ur\u010dit statistickou v\u00fdznamnost v\u00fdsledk\u016f experiment\u016f.<\/p>\n

Syntaxe a p\u0159\u00edklady<\/h2>\n

Syntaxe funkce T.INV.2T<\/code> v MS Excel a Google Sheets je:<\/p>\n

T.INV.2T(pravd\u011bpodobnost; stupn\u011b_volnosti)<\/code><\/pre>\n
    \n
  • pravd\u011bpodobnost<\/strong> – Pravd\u011bpodobnost spojen\u00e1 s dvouocas\u00fdm t-rozlo\u017een\u00edm, hodnota mus\u00ed b\u00fdt v rozmez\u00ed 0 a\u017e 1.<\/li>\n
  • stupn\u011b_volnosti<\/strong> – Po\u010det stup\u0148\u016f volnosti vzorku, mus\u00ed b\u00fdt kladn\u00e9 cel\u00e9 \u010d\u00edslo.<\/li>\n<\/ul>\n
    P\u0159\u00edklad:<\/strong> Pro v\u00fdpo\u010det t-hodnoty p\u0159i pravd\u011bpodobnosti 0.05 a 10 stupn\u00edch volnosti pou\u017eijte n\u00e1sleduj\u00edc\u00ed vzorec:<\/p>\n
    =T.INV.2T(0.05, 10)<\/code><\/pre>\n
    Tento vzorec vr\u00e1t\u00ed t-hodnotu pro pravd\u011bpodobnost 0.05 a 10 stup\u0148\u016f volnosti v r\u00e1mci dvouocas\u00e9ho t-rozlo\u017een\u00ed.<\/p>\n
    Praktick\u00e9 \u00falohy a \u0159e\u0161en\u00ed<\/h2>\n\n\n\n\n
    \u00daloha<\/th>\nPopis \u00falohy<\/th>\n\u0158e\u0161en\u00ed<\/th>\n<\/tr>\n
    1<\/td>\nUr\u010den\u00ed t-hodnoty pro meze spolehlivosti<\/td>\nZji\u0161t\u011bn\u00ed t-hodnoty pro v\u00fdpo\u010det 95% intervalu spolehlivosti u vzorku s 30 stupni volnosti.<\/td>\n<\/tr>\n
    2<\/td>\nPorovn\u00e1n\u00ed dvou vzork\u016f<\/td>\nStanoven\u00ed t-hodnoty pro testov\u00e1n\u00ed hypot\u00e9zy o rozd\u00edlu pr\u016fm\u011br\u016f dvou nez\u00e1visl\u00fdch vzork\u016f s 20 stupni volnosti na hladin\u011b v\u00fdznamnosti 5%.<\/td>\n<\/tr>\n<\/table>\n
    T-hodnoty lze aplikovat v r\u016fzn\u00fdch statistick\u00fdch testech, v\u010detn\u011b t-testu pro nez\u00e1visl\u00e9 vzorky, kde porovn\u00e1v\u00e1te pr\u016fm\u011bry dvou skupin.<\/p>\n
    Komentovan\u00e9 \u0159e\u0161en\u00ed praktick\u00fdch \u00faloh<\/h2>\n
    \u00daloha 1:<\/strong> Pot\u0159ebujeme zjistit t-hodnotu pro dvouocasou pravd\u011bpodobnost 0.05, co\u017e odpov\u00edd\u00e1 95% intervalu spolehlivosti (0.025 na ka\u017ed\u00e9m konci rozlo\u017een\u00ed) pro 30 stup\u0148\u016f volnosti.<\/p>\n
    =T.INV.2T(0.05, 30)<\/code><\/pre>\n
    Hodnota vr\u00e1cen\u00e1 touto funkc\u00ed ur\u010duje t-hodnotu, kter\u00e1 by m\u011bla b\u00fdt pou\u017eita na hran\u00e1ch dvouocas\u00e9ho intervalu pro 95% spolehlivost.<\/p>\n
    \u00daloha 2:<\/strong> Pot\u0159ebujeme naj\u00edt t-hodnotu p\u0159i pravd\u011bpodobnosti 0.05 a 20 stupn\u00edch volnosti pro testov\u00e1n\u00ed rozd\u00edl\u016f pr\u016fm\u011br\u016f.<\/p>\n
    =T.INV.2T(0.05, 20)<\/code><\/pre>\n
    Tato funkce poskytne t-hodnotu nezbytnou pro rozhodov\u00e1n\u00ed v t-testu nez\u00e1visl\u00fdch vzork\u016f, zda jsou pr\u016fm\u011bry statisticky v\u00fdznamn\u011b rozd\u00edln\u00e9.<\/p>\n
    Takto funkce T.INV.2T<\/strong> slou\u017e\u00ed jako kl\u00ed\u010dov\u00fd n\u00e1stroj pro z\u00edsk\u00e1v\u00e1n\u00ed kritick\u00fdch t-hodnot pot\u0159ebn\u00fdch pro statistick\u00e9 rozhodov\u00e1n\u00ed ve v\u011bdeck\u00fdch a praktick\u00fdch aplikac\u00edch.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Vr\u00e1t\u00ed inverzn\u00ed funkci k distribu\u010dn\u00ed funkci Studentova t-rozd\u011blen\u00ed<\/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-5847","post","type-post","status-publish","format-standard","hentry","category-statisticke"],"acf":[],"yoast_head":"\nFunkce T.INV.2T v Excelu: jak funguje, primjeri kori\u0161tenja formule<\/title>\n<meta name=\"description\" content=\"Opis funkcije T.INV.2T u Excelu i Google tablicama. 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