{"id":5466,"date":"2025-07-15T13:34:44","date_gmt":"2025-07-15T13:34:44","guid":{"rendered":"https:\/\/functiontranslator.com\/chisq-dist\/"},"modified":"2021-02-26T09:51:18","modified_gmt":"2021-02-26T09:51:18","slug":"chisq-dist","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/cs\/chisq-dist\/","title":{"rendered":"CHISQ.DIST"},"content":{"rendered":"

Syntaxe a popis funkce pro anal\u00fdzu rozd\u00edl\u016f<\/h2>\n

Funkce slou\u017e\u00ed k v\u00fdpo\u010dtu distribuce ch\u00ed-kvadr\u00e1t, co\u017e je d\u016fle\u017eit\u00e9 pro statistick\u00e9 testov\u00e1n\u00ed nez\u00e1vislosti nebo shody s o\u010dek\u00e1van\u00fdm rozd\u011blen\u00edm. Tato distribuce je \u0161iroce pou\u017e\u00edvan\u00e1 v r\u016fzn\u00fdch oblastech jako jsou biostatistika, sociologie \u010di in\u017een\u00fdrsk\u00e9 discipl\u00edny a slou\u017e\u00ed k porovn\u00e1n\u00ed teoretick\u00fdch a skute\u010dn\u011b pozorovan\u00fdch frekvenc\u00ed. <\/p>\n

Syntaxe ve MS Excel<\/strong> i Google Tabulk\u00e1ch<\/strong> je identick\u00e1 a vypad\u00e1 takto:<\/p>\n

CHISQ.DIST(x, stupn\u011b_volnosti, kumulativn\u00ed)<\/code><\/pre>\n
    \n
  • x<\/code> – hodnota, pro kterou chceme vypo\u010d\u00edtat funkci. Tato hodnota mus\u00ed b\u00fdt nez\u00e1porn\u00e1.<\/li>\n
  • stupn\u011b_volnosti<\/code> – po\u010det stup\u0148\u016f volnosti ch\u00ed-kvadr\u00e1t distribuce.<\/li>\n
  • kumulativn\u00ed<\/code> – logick\u00e1 hodnota (TRUE nebo FALSE) ur\u010duj\u00edc\u00ed, zda funkce vrac\u00ed hodnotu distribu\u010dn\u00ed funkce (kumulativn\u00ed = TRUE) nebo hustotu pravd\u011bpodobnosti (kumulativn\u00ed = FALSE).<\/li>\n<\/ul>\n
    Praktick\u00e9 \u00fakoly a jejich \u0159e\u0161en\u00ed<\/h2>\n
    \u00dakol 1: Testov\u00e1n\u00ed nez\u00e1vislosti<\/h3>\n
    P\u0159edpokl\u00e1dejme, \u017ee m\u00e1me data o v\u00fdsledc\u00edch dvou s\u00e9ri\u00ed experiment\u016f a chceme testovat, zda jsou v\u00fdsledky nez\u00e1visl\u00e9 na typu experimentu. M\u00e1me ur\u010den\u00e9 o\u010dek\u00e1van\u00e9 po\u010dty a skute\u010dn\u00e9 pozorov\u00e1n\u00ed. Nejd\u0159\u00edve mus\u00edme vypo\u010d\u00edtat ch\u00ed-kvadr\u00e1t statistiku z pozorovan\u00fdch a o\u010dek\u00e1van\u00fdch hodnot. Pak bychom pou\u017eili:<\/p>\n
    CHISQ.DIST(x, stupn\u011b_volnosti, TRUE)<\/code><\/pre>\n
    kde x<\/code> je vypo\u010d\u00edtan\u00e1 statistika a stupn\u011b_volnosti<\/code> jsou (po\u010det kategori\u00ed – 1). Pokud v\u00fdsledn\u00e1 p-hodnota (output funkce) je men\u0161\u00ed ne\u017e 0.05, zam\u00edt\u00e1me nulovou hypot\u00e9zu o nez\u00e1vislosti dat.<\/p>\n
    \u00dakol 2: Goodness-of-fit test<\/h3>\n
    V tomto \u00fakolu chceme ov\u011b\u0159it, zda na\u0161e data odpov\u00eddaj\u00ed p\u0159edpokl\u00e1dan\u00e9mu rozdistributionselps\u00edmu modelu. Vypo\u010dteme ch\u00ed-kvadr\u00e1t hodnoty pro ka\u017edou kategorii data a sumarizujeme je. N\u00e1sledn\u011b pou\u017eijeme:<\/p>\n
    CHISQ.DIST(x, stupn\u011b_volnosti, TRUE)<\/code><\/pre>\n
    kde x<\/code> je sumarizovan\u00e9 ch\u00ed-kvadr\u00e1t hodnoty a stupn\u011b_volnosti<\/code> odpov\u00edd\u00e1 po\u010dtu kategori\u00ed m\u00ednus po\u010det odhadovan\u00fdch parametr\u016f rozd\u011blen\u00ed m\u00ednus jeden. Podobn\u011b, pokud je v\u00fdsledn\u00e1 p-hodnota men\u0161\u00ed ne\u017e 0.05, m\u016f\u017eeme teorii o shod\u011b s modelem zam\u00edtnout.<\/p>\n
    Tyto p\u0159\u00edklady ukazuj\u00ed, jak je funkce u\u017eite\u010dn\u00e1 v r\u016fzn\u00fdch aplikac\u00edch statistick\u00fdch test\u016f a anal\u00fdz.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Vr\u00e1t\u00ed hodnotu kumulativn\u00ed funkce hustoty pravd\u011bpodobnosti beta 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-5466","post","type-post","status-publish","format-standard","hentry","category-statisticke"],"acf":[],"yoast_head":"\nFunkce CHISQ.DIST v Excelu: jak funguje, primjeri kori\u0161tenja formule<\/title>\n<meta name=\"description\" content=\"Opis funkcije CHISQ.DIST u Excelu i Google tablicama. 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