{"id":5467,"date":"2025-07-15T13:34:44","date_gmt":"2025-07-15T13:34:44","guid":{"rendered":"https:\/\/functiontranslator.com\/chisq-dist-rt\/"},"modified":"2021-02-26T09:51:22","modified_gmt":"2021-02-26T09:51:22","slug":"chisq-dist-rt","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/cs\/chisq-dist-rt\/","title":{"rendered":"CHISQ.DIST.RT"},"content":{"rendered":"

Princip a vyu\u017eit\u00ed distribu\u010dn\u00ed funkce ch\u00ed kvadr\u00e1t (prav\u00e1 strana) v Excelu a Google Tabulk\u00e1ch<\/h2>\n

Funkce CHISQ.DIST.RT slou\u017e\u00ed k v\u00fdpo\u010dtu prav\u00e9 strany kumulativn\u00ed distribu\u010dn\u00ed funkce ch\u00ed-kvadr\u00e1t, co\u017e odborn\u011b znamen\u00e1, \u017ee ur\u010duje pravd\u011bpodobnost, \u017ee pozorovan\u00e1 hodnota ch\u00ed-kvadr\u00e1t bude v\u011bt\u0161\u00ed ne\u017e zadan\u00e1 hodnota x. Tato funkce je velmi u\u017eite\u010dn\u00e1 ve statistice, zejm\u00e9na p\u0159i testov\u00e1n\u00ed hypot\u00e9z, kde se sna\u017e\u00edme zjistit, zda odchylky mezi o\u010dek\u00e1van\u00fdmi a pozorovan\u00fdmi frekvencemi jsou dostate\u010dn\u011b velk\u00e9 na to, aby byly pova\u017eov\u00e1ny za statisticky v\u00fdznamn\u00e9.<\/p>\n

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

Syntaxe funkce v MS Excel a Google Tabulk\u00e1ch je:<\/p>\n

CHISQ.DIST.RT(x, freedom_degrees)<\/code><\/pre>\n
    \n
  • x<\/code> – hodnota ch\u00ed kvadr\u00e1t statistiky, kter\u00e1 je vyhodnocov\u00e1na<\/li>\n
  • freedom_degrees<\/code> – po\u010det stup\u0148\u016f volnosti distribuce.<\/li>\n<\/ul>\n
    P\u0159\u00edklad:<\/p>\n
    CHISQ.DIST.RT(10, 8)<\/code><\/pre>\n
    Tento p\u0159\u00edklad vr\u00e1t\u00ed pravd\u011bpodobnost, \u017ee hodnota ch\u00ed kvadr\u00e1t s 8 stupni volnosti bude v\u011bt\u0161\u00ed ne\u017e 10.<\/p>\n
    Praktick\u00e9 pou\u017eit\u00ed funkce v re\u00e1ln\u00fdch sc\u00e9n\u00e1\u0159\u00edch<\/h2>\n
    Analyzujme dv\u011b situace, kde m\u016f\u017eeme tuto funkci efektivn\u011b uplatnit:<\/p>\n
    P\u0159\u00edpad 1: Testov\u00e1n\u00ed dobr\u00e9 shody<\/h3>\n
    P\u0159edpokl\u00e1dejme, \u017ee m\u00e1me k dispozici pozorovan\u00e9 a o\u010dek\u00e1van\u00e9 frekvence produkt\u016f prod\u00e1van\u00fdch v r\u016fzn\u00fdch kategori\u00edch a chceme zjistit, zda se skute\u010dn\u00e9 prodeje li\u0161\u00ed od t\u011bch, kter\u00e9 o\u010dek\u00e1v\u00e1me.<\/p>\n
    Provedeme v\u00fdpo\u010det ch\u00ed kvadr\u00e1t statistiky a pou\u017eijeme n\u00e1sleduj\u00edc\u00ed hodnoty ve funkci:<\/p>\n
    CHISQ.DIST.RT(vypo\u010dten\u00e1-ch\u00ed-statistika, po\u010det-kategori\u00ed-1)<\/code><\/pre>\n
    Kde po\u010det-kategori\u00ed-1<\/code> je po\u010det stup\u0148\u016f volnosti (nap\u0159. pro 5 kategori\u00ed, pou\u017eijeme 4). Komentovan\u00fd v\u00fdsledek n\u00e1m \u0159ekne, zda jsou rozd\u00edly mezi pozorovan\u00fdmi a o\u010dek\u00e1van\u00fdmi hodnotami statisticky v\u00fdznamn\u00e9.<\/p>\n
    P\u0159\u00edpad 2: Test nez\u00e1vislosti v kontingen\u010dn\u00ed tabulce<\/h3>\n
    M\u00e1me data rozd\u011blen\u00e1 do tabulky podle dvou kategorick\u00fdch prom\u011bnn\u00fdch, nap\u0159\u00edklad v\u011bk a preferovan\u00fd typ produktu, a chceme zjistit, zda mezi t\u011bmito prom\u011bnn\u00fdmi existuje statistick\u00e1 nez\u00e1vislost.<\/p>\n
    Vypo\u010d\u00edtejte ch\u00ed kvadr\u00e1t statistiku z kontingen\u010dn\u00ed tabulky a pou\u017eijte ji ve funkci:<\/p>\n
    CHISQ.DIST.RT(vypo\u010dten\u00e1-ch\u00ed-statistika, (po\u010det-\u0159\u00e1dk\u016f-1)*(po\u010det-sloupc\u016f-1))<\/code><\/pre>\n
    Kde (po\u010det-\u0159\u00e1dk\u016f-1)*(po\u010det-sloupc\u016f-1) jsou stupn\u011b volnosti. V\u00fdsledek funkce n\u00e1m d\u00e1 pravd\u011bpodobnost, s jakou m\u016f\u017eeme obr\u00e1tit hypot\u00e9zu o nez\u00e1vislosti mezi prom\u011bnn\u00fdmi.<\/p>\n
    Oba v\u00fd\u0161e uveden\u00e9 p\u0159\u00edklady n\u00e1m umo\u017e\u0148uj\u00ed aplikovat statistick\u00e9 testov\u00e1n\u00ed a vyvodit z\u00e1v\u011bry z pozorovan\u00fdch dat v r\u016fzn\u00fdch oblastech v\u00fdzkumu a aplikovan\u00e9 statistiky.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Vr\u00e1t\u00ed jednostrannou pravd\u011bpodobnost rozd\u011blen\u00ed ch\u00ed-kvadr\u00e1t<\/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-5467","post","type-post","status-publish","format-standard","hentry","category-statisticke"],"acf":[],"yoast_head":"\nFunkce CHISQ.DIST.RT v Excelu: jak funguje, primjeri kori\u0161tenja formule<\/title>\n<meta name=\"description\" content=\"Opis funkcije CHISQ.DIST.RT u Excelu i Google tablicama. 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