	{"id":2877,"date":"2012-03-30T15:45:00","date_gmt":"2012-03-30T15:45:00","guid":{"rendered":"https:\/\/www.pokerstrategy.com\/cs\/strategy\/matematika-znalost-expected-value-ev\/"},"modified":"2026-06-11T10:59:43","modified_gmt":"2026-06-11T10:59:43","slug":"matematika-znalost-expected-value-ev","status":"publish","type":"strategy","link":"https:\/\/www.pokerstrategy.com\/cs\/strategy\/fixed-limit\/matematika-znalost-expected-value-ev\/","title":{"rendered":"Matematika: V \u010dem v\u00e1m pom\u016f\u017ee znalost o\u010dek\u00e1van\u00e9 hodnoty (EV)?"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><h1>Matematika: V &#269;em v&aacute;m pom&#367;&#382;e znalost o&#269;ek&aacute;van&eacute; hodnoty (EV)?<\/h1><h1 align=\"left\">&Uacute;vod<\/h1><p><b><i>V &#269;l&aacute;nku se do&#269;tete<\/i><\/b> <\/p><ul class=\"emoList1\">\n<li><i>EV = (p&#345;&iacute;padn&yacute; zisk) * (pravd&#283;podobnost v&yacute;hry) - (p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<br> <\/i><\/li>\n<li><i>Jak stanovit nejlep&scaron;&iacute; postup<br> <\/i><\/li>\n<li><i>Jak vyu&#382;&iacute;t vzorec pro EV ke zlep&scaron;en&iacute; va&scaron;&iacute; hry<br> <\/i><\/li>\n<\/ul><div style=\"text-align: center;margin-bottom: 12px\"><img decoding=\"async\" src=\"\/\/www.pokerstrategy.com\/download\/content\/bilder\/ps_trennlinie.jpg\" alt=\"\" width=\"100%\" height=\"1\"><\/div><p class=\"emoNormal\">O&#269;ek&aacute;van&aacute; hodnota n&#283;jak&eacute; akce n&aacute;m &#345;&iacute;k&aacute;, jak velk&yacute; zisk nebo ztr&aacute;tu z t&eacute;to akce v pr&#367;m&#283;ru zaznamen&aacute;me. V pokeru lze v&#382;dy stanovit \"spr&aacute;vnou\" akci t&iacute;m, &#382;e ur&#269;&iacute;me EV v&scaron;ech akc&iacute;, kter&eacute; v dan&yacute; okam&#382;ik m&#367;&#382;eme prov&eacute;st, a vybereme tu s nejvy&scaron;&scaron;&iacute; o&#269;ek&aacute;vanou hodnotou.<\/p><p class=\"emoNormal\">Pokud se nap&#345;&iacute;klad rozhodujete mezi callem a foldem, m&#367;&#382;ete si spo&#269;&iacute;tat EV a budete p&#345;esn&#283; v&#283;d&#283;t, kter&eacute; rozhodnut&iacute; je pro v&aacute;s v&yacute;hodn&#283;j&scaron;&iacute;. Samoz&#345;ejm&#283; se ji&#382; um&iacute;te v situac&iacute;ch call\/fold rozhodovat podle odds a out&#367;, ale nau&#269;it se po&#269;&iacute;tat EV je dal&scaron;&iacute; f&aacute;z&iacute; va&scaron;eho v&yacute;voje.<\/p><p class=\"emoNormal\">V tomto &#269;l&aacute;nku se nau&#269;&iacute;te po&#269;&iacute;tat EV ur&#269;it&eacute; akce a zvolit si nejlep&scaron;&iacute; mo&#382;nou akci v dan&eacute; situaci. D&aacute;le v&aacute;m uk&aacute;&#382;eme, jak lze pou&#382;&iacute;t o&#269;ek&aacute;vanou hodnotu k rozboru ji&#382; odehran&yacute;ch her, d&iacute;ky &#269;emu&#382; si budete moci odpov&#283;d&#283;t na ot&aacute;zky typu \"Co by se stalo, pokud bych zahr&aacute;l handu takto?\" nebo \"Jak&eacute; okolnosti by musely nastat, abych v t&eacute;to situaci zahr&aacute;l all-in?\".<\/p><p class=\"emoNormal\">Abyste byli schopni pochopit obsah tohoto &#269;l&aacute;nku, je naprosto nezbytn&eacute; rozum&#283;t konceptu odds a out&#367;. Mo&#382;n&aacute; bude tak&eacute; pot&#345;eba osv&#283;&#382;it si z&aacute;klady matematiky v oblasti line&aacute;rn&iacute;ch rovnic a pravd&#283;podobnosti.<\/p><h1 style=\"margin-top: 24px\" align=\"left\">Jak spo&#269;&iacute;tat o&#269;ek&aacute;vanou hodnotu n&#283;jak&eacute; akce<\/h1><p class=\"emoNormal\">P&#345;edstavte si, &#382;e v&aacute;m n&#283;kdo nab&iacute;dne jednu ze dvou ob&aacute;lek. V jedn&eacute; ob&aacute;lce je &euro;5 a ve druh&eacute; je &euro;20, ale vy nev&iacute;te, ve kter&eacute; ob&aacute;lce je kter&aacute; &#269;&aacute;stka.<\/p><p class=\"emoNormal\">Jednu z t&#283;chto dvou ob&aacute;lek si m&#367;&#382;ete koupit za &euro;10. Ot&aacute;zka zn&iacute;, m&#283;li byste si ji koupit? Odpov&#283;&#271; lze zjistit pomoc&iacute; o&#269;ek&aacute;van&eacute; hodnoty ka&#382;d&eacute; z akc&iacute;. EV v&aacute;m &#345;&iacute;k&aacute;, kolik pen&#283;z v pr&#367;m&#283;ru z&iacute;sk&aacute;te\/ztrat&iacute;te, pokud by v&aacute;m bylo umo&#382;n&#283;no dan&eacute; rozhodnut&iacute; prov&aacute;d&#283;t opakovan&#283;.<\/p><p class=\"emoListintro\"><b>K v&yacute;po&#269;tu pot&#345;ebujete 4 hodnoty:<\/b><\/p><ul class=\"emoList1\">\n<li>Kolik m&#367;&#382;ete ztratit? <\/li>\n<li>Kolik m&#367;&#382;ete z&iacute;skat?<\/li>\n<li>S jakou pravd&#283;podobnost&iacute; vyhrajete?<\/li>\n<li>S jakou pravd&#283;podobnost&iacute; prohrajete?<\/li>\n<\/ul><p class=\"emoListintro\">EV je zkratka pro o&#269;ek&aacute;vanou hodnotu a zde je vzorec pro jej&iacute; v&yacute;po&#269;et.<\/p><div align=\"left\" style=\"border: 1px solid #d5002d;padding: 4px;margin-top: 8px;margin-bottom: 12px\"><i>EV = <\/i><i> (p&#345;&iacute;padn&yacute; zisk) * (pravd&#283;podobnost v&yacute;hry) - (p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<\/i><i>&nbsp;<\/i><\/div><p class=\"emoNormal\">Vlastn&#283; zde pom&#283;&#345;ujete mo&#382;n&eacute; zisky s mo&#382;n&yacute;mi ztr&aacute;tami. T&iacute;m dost&aacute;v&aacute;te o&#269;ek&aacute;vanou hodnotu va&scaron;eho rozhodnut&iacute;: jak&yacute; bude kone&#269;n&yacute; v&yacute;sledek m&eacute;ho rozhodnut&iacute;? M&#367;&#382;eme vid&#283;t, &#382;e tento vzorec rozli&scaron;uje mezi v&yacute;hrou a prohrou, ale obecn&#283; m&#367;&#382;eme ob&#283; zahrnout pod pojem \"v&yacute;sledek\". Pokud je v&yacute;sledek kladn&yacute;, p&#345;ipisujete si zisk, pokud je z&aacute;porn&yacute;, utrp&iacute;te ztr&aacute;ty.<\/p><p class=\"emoListintro\">N&aacute;&scaron; obecn&#283;j&scaron;&iacute; vzorec je tedy:<\/p><div align=\"left\" style=\"border: 1px solid #d5002d;padding: 4px;margin-top: 8px;margin-bottom: 12px\"><i>EV = Pravd&#283;podobnost<sub>1<\/sub> * V&yacute;sledek<sub>1<\/sub> + Pravd&#283;podobnost<sub>2<\/sub> * V&yacute;sledek<sub>2<\/sub> + ... + Pravd&#283;podobnost<sub>n<\/sub> * V&yacute;sledek<sub>n<\/sub><\/i><\/div><p><\/p><p class=\"emoListintro\"><b>Vzorec zohled&#328;uje n&aacute;sleduj&iacute;c&iacute; skute&#269;nosti: <\/b><\/p><ul class=\"emoList1\">\n<li>Co se m&#367;&#382;e st&aacute;t?<\/li>\n<li><b>V&yacute;sledek<sub>x<\/sub>:<\/b> Kolik z&iacute;sk&aacute;te nebo ztrat&iacute;te, pokud nastane ud&aacute;lost x? <\/li>\n<li><b>Pravd&#283;podobnost<sub>x<\/sub>:<\/b> Jak je pravd&#283;podobn&eacute;, &#382;e nastane ud&aacute;lost x? <\/li>\n<\/ul><p class=\"emoNormal\">Jednodu&scaron;e stanov&iacute;te v&yacute;sledek konkr&eacute;tn&iacute;ho rozhodnut&iacute; m&iacute;sto toho, abyste rozli&scaron;ovali mezi zisky a ztr&aacute;tami. Pokud je hodnota kladn&aacute;, pak v pr&#367;m&#283;ru na tomto rozhodnut&iacute; vyd&#283;l&aacute;te. Pokud je z&aacute;porn&aacute;, pak v pr&#367;m&#283;ru budete na tomto rozhodnut&iacute; p&#345;ich&aacute;zet o pen&iacute;ze.<\/p><p class=\"emoNormal\">P&#345;esnou EV m&#367;&#382;ete spo&#269;&iacute;tat, pokud vezmete do &uacute;vahy v&scaron;echny p&#345;&iacute;pustn&eacute; v&yacute;sledky dan&eacute; situace. Za&#269;n&#283;te t&iacute;m, &#382;e si stanov&iacute;te, co se m&#367;&#382;e p&#345;ihodit a kolik v ka&#382;d&eacute; takov&eacute; situace vyhrajete\/prohrajete. N&aacute;sledn&#283; si stanov&iacute;te pravd&#283;podobnosti pro ka&#382;d&yacute; uva&#382;ovan&yacute; v&yacute;sledek. Pak u&#382; jen vyn&aacute;sob&iacute;te p&#345;&iacute;padn&eacute; zisky a ztr&aacute;ty jejich pravd&#283;podobnostmi a na konci se&#269;tete v&yacute;sledky.<\/p><p class=\"emoNormal\">V na&scaron;em p&#345;&iacute;klad&#283; je pravd&#283;podobnost vybr&aacute;n&iacute; kter&eacute;koli ob&aacute;lky stejn&aacute;, a sice 50%. Ob&aacute;lku A s &euro;5 si vyberete v 50% v&scaron;ech p&#345;&iacute;pad&#367; a ob&aacute;lku B s &euro;20 si zvol&iacute;te ve zbyl&yacute;ch 50% v&scaron;ech p&#345;&iacute;pad&#367;.<\/p><p class=\"emoNormal\">To tak&eacute; znamen&aacute;, &#382;e v polovin&#283; v&scaron;ech p&#345;&iacute;pad&#367; vyhrajete &euro;5 a ve zbyl&yacute;ch p&#345;&iacute;padech vyhrajete &euro;20. Mimo to v&scaron;ak ve 100% p&#345;&iacute;pad&#367; p&#345;ijdete o &euro;10.<\/p><p class=\"emoListintro\"><b>V&yacute;&scaron;e uveden&eacute; dosad&iacute;me do na&scaron;eho vzorce:<\/b><\/p><ul class=\"emoList1\">\n<li>P&#345;ijdete o 10 eur ve 100% p&#345;&iacute;pad&#367;, proto&#382;e je to poplatek za hru.<\/li>\n<li>Vyhrajete &euro;5 v 50% v&scaron;ech p&#345;&iacute;pad&#367;. <\/li>\n<li>Vyhrajete &euro;20 v 50% v&scaron;ech p&#345;&iacute;pad&#367;.<\/li>\n<\/ul><p class=\"emoListintro\"><b>To lze vyj&aacute;d&#345;it jako: <\/b><\/p><p class=\"emoNormal\"><i>EV = v&yacute;hra(ob&aacute;lka A) * 50% + v&yacute;hra(ob&aacute;lka B) * 50%  &ndash; ztr&aacute;ta(s&aacute;zka) * 100%<br> EV = 5 eur * 50% + 20 eur * 50 % - 10 eur * 100% <\/i><\/p><p class=\"emoNormal\">Po &uacute;prav&#283; vid&iacute;me 50% z 5 (&euro;2.50) + 50% z 20 (&euro;10) - 100% z 10 (&euro;10). V&yacute;sledek n&aacute;m &#345;ekne, kolik bychom v pr&#367;m&#283;ru z&iacute;skali\/ztratili v p&#345;&iacute;pad&#283;, &#382;e bychom p&#345;istoupili na hru s ob&aacute;lkami a jednu si zakoupili.<\/p><p class=\"emoNormal\"><i>EV = 2.50 eura + 10 eur &ndash; 10 eur<br> EV = 2.50 eura <\/i><\/p><p class=\"emoNormal\">To znamen&aacute;, &#382;e v pr&#367;m&#283;ru dos&aacute;hnete zisku &euro;2.50 poka&#382;d&eacute;, kdy p&#345;ijmete nab&iacute;dku. V&yacute;sledkem je kladn&aacute; hodnota, co&#382; znamen&aacute;, &#382;e toto rozhodnut&iacute; je EV+. V pokerov&eacute; komunit&#283; a na PokerStrategy se setk&aacute;te s v&yacute;razy \"EV plus\" a \"EV minus\" velice &#269;asto. Nyn&iacute; ji&#382; v&iacute;te, co to znamen&aacute;.<\/p><h1 align=\"left\">Jak d&#283;lat spr&aacute;vn&aacute; rozhodnut&iacute; pomoc&iacute; EV<\/h1><p class=\"emoNormal\">Co do t&eacute;to chv&iacute;le vypadalo trivi&aacute;ln&#283;, se v&yacute;razn&#283; zkomplikuje, kdy&#382; za&#269;nete rozeb&iacute;rat re&aacute;ln&eacute; situace. Pokud se dostanete do situace, kdy se mus&iacute;te na turnu rozhodnout mezi callem a foldem, ud&#283;lejte prost&#283; toto: Spo&#269;&iacute;tejte si EV callu a EV foldu. Porovnejte v&yacute;sledky a vyberte si ten s vy&scaron;&scaron;&iacute; EV.<\/p><p class=\"emoNormal\">Poj&#271;me si nejprve uk&aacute;zat jeden obecn&yacute; p&#345;&iacute;klad. M&aacute;te dv&#283; mo&#382;n&eacute; ud&aacute;losti: A a B. Pravd&#283;podobnost, &#382;e nastane ud&aacute;lost A, je 80%, a pravd&#283;podobnost B je 20%.<\/p><table border=\"0\" cellspacing=\"2\" cellpadding=\"3\" width=\"100%\">\n<tbody>\n<tr>\n<td align=\"center\" style=\"color: #ffffff\" bgcolor=\"#d5002c\">&nbsp;<\/td>\n<td align=\"center\" style=\"color: #ffffff\" bgcolor=\"#d5002c\">Ud&aacute;lost A nastane<\/td>\n<td align=\"center\" style=\"color: #ffffff\" bgcolor=\"#d5002c\">Ud&aacute;lost B nastane<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#c5c6c8\">Pravd&#283;podobnost<\/td>\n<td align=\"center\" bgcolor=\"#c5c6c8\">80%<\/td>\n<td align=\"center\" bgcolor=\"#c5c6c8\">20%<\/td>\n<\/tr>\n<\/tbody>\n<\/table><p class=\"emoNormal\">V na&scaron;em p&#345;&iacute;klad&#283; si m&#367;&#382;ete vsadit na to, zda nastane situace A, nebo B. Pokud si vsad&iacute;te na ud&aacute;lost A a ta se skute&#269;n&#283; stane, vyhrajete &euro;2, ale pokud se netref&iacute;te, pak p&#345;ijdete o &euro;4.<\/p><p class=\"emoNormal\">Nebo m&#367;&#382;ete vyhr&aacute;t &euro;4 t&iacute;m, &#382;e tref&iacute;te ud&aacute;lost B, ale v t&eacute;to variant&#283; p&#345;ijdete o &euro;2, pokud nastane ud&aacute;lost A.<\/p><table border=\"0\" cellspacing=\"2\" cellpadding=\"3\" width=\"100%\">\n<tbody>\n<tr>\n<td align=\"center\" style=\"color: #ffffff\" bgcolor=\"#d5002c\">&nbsp;<\/td>\n<td align=\"center\" style=\"color: #ffffff\" bgcolor=\"#d5002c\">Ud&aacute;lost A nastane<\/td>\n<td align=\"center\" style=\"color: #ffffff\" bgcolor=\"#d5002c\">Ud&aacute;lost B nastane<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#c5c6c8\">Vsad&iacute;te na ud&aacute;lost A<\/td>\n<td align=\"center\" bgcolor=\"#c5c6c8\">Vyhrajete 2&euro;<\/td>\n<td align=\"center\" bgcolor=\"#c5c6c8\">Prohrajete 4&euro;<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#d9dadb\">Vsad&iacute;te na ud&aacute;lost B<\/td>\n<td align=\"center\" bgcolor=\"#d9dadb\">Prohrajete 2&euro;<\/td>\n<td align=\"center\" bgcolor=\"#d9dadb\">Vyhrajete 4&euro;<\/td>\n<\/tr>\n<\/tbody>\n<\/table><p class=\"emoNormal\">Zda je v&yacute;hodn&#283;j&scaron;&iacute; vsadit na ud&aacute;lost A nebo B, zjist&iacute;te tak, &#382;e si spo&#269;&iacute;t&aacute;te o&#269;ek&aacute;vanou hodnotu s&aacute;zky na ud&aacute;lost A a porovn&aacute;te ji s o&#269;ek&aacute;vanou hodnotou s&aacute;zky na ud&aacute;lost B.<\/p><p class=\"emoNormal\"><i>EV = (p&#345;&iacute;padn&aacute; v&yacute;hra) * (pravd&#283;podobnost v&yacute;hry) - (p&#345;&iacute;padn&aacute; prohra) * (pravd&#283;podobnost prohry)<\/i><br> <i> EV(A) = 2&euro; * 80% - 4&euro; * 20%<br> EV(B) = 4&euro; * 20% - 2&euro; * 80% <\/i><\/p><p class=\"emoNormal\">EV s&aacute;zky na ud&aacute;lost A vych&aacute;z&iacute; z toho, &#382;e vyhrajete &euro;2 v 80% v&scaron;ech p&#345;&iacute;pad&#367; a prohrajete &euro;4 ve 20% v&scaron;ech p&#345;&iacute;pad&#367;. Poj&#271;me zjistit p&#345;esnou hodnotu.<\/p><p class=\"emoNormal\"><i>EV(A) = 2&euro; * 80% - 4&euro; * 20%<br> EV(A) = 1.6&euro; - 0.8&euro;<br> <b><u> EV(A) = 0.8&euro;<\/u><\/b> <\/i><\/p><p><\/p><p class=\"emoNormal\">V&yacute;sledn&aacute; hodnota je kladn&aacute;, co&#382; znamen&aacute;, &#382;e vsadit na ud&aacute;lost A se v&aacute;m vyplat&iacute;. V pr&#367;m&#283;ru z ka&#382;d&eacute; s&aacute;zky na ud&aacute;lost A vyd&#283;l&aacute;te &euro;0.80. Nyn&iacute; se poj&#271;me pod&iacute;vat na ud&aacute;lost B.<\/p><p class=\"emoNormal\"><i>EV(B) = 4&euro; * 20% - 2&euro; * 80%<br> EV(B) = 0.8&euro; - 1.6&euro;<br> <b><u> EV(B) = -0.8&euro;<\/u><\/b><\/i><\/p><p class=\"emoNormal\">V&yacute;sledn&aacute; hodnota je z&aacute;porn&aacute;. V pr&#367;m&#283;ru p&#345;ijdete o &euro;0.80 poka&#382;d&eacute;, kdy vsad&iacute;te na ud&aacute;lost B!<\/p><p class=\"emoNormal\">Porovn&aacute;te EV obou mo&#382;n&yacute;ch rozhodnut&iacute; a vid&iacute;te, &#382;e EV ud&aacute;losti A je v&yacute;razn&#283; vy&scaron;&scaron;&iacute; ne&#382; EV ud&aacute;losti B.<\/p><p class=\"emoNormal\"><u><b><i>EV(A)&gt;EV(B)<\/i><\/b><\/u><\/p><p class=\"emoNormal\">Zisk 80 cent&#367; na jedn&eacute; stran&#283; a ztr&aacute;ta 80 cent&#367; na stran&#283; druh&eacute;. Va&scaron;&iacute; nejlep&scaron;&iacute; volbou je evidentn&#283; vsadit na ud&aacute;lost A. Tento princip je jednou ze z&aacute;kladn&iacute;ch metod v pokeru.<\/p><div align=\"left\" style=\"border: 1px solid #d5002d;padding: 4px;margin-top: 8px;margin-bottom: 12px\">Kdy&#382; stoj&iacute;te v pokeru p&#345;ed rozhodnut&iacute;m, vyberte si akci s nejvy&scaron;&scaron;&iacute; o&#269;ek&aacute;vanou hodnotou.<\/div><p class=\"emoNormal\">To je z&aacute;kladn&iacute; princip pokeru. Pov&scaron;imn&#283;te si nuance ve formulaci. Nesna&#382;&iacute;te se naj&iacute;t akci, kter&aacute; bude m&iacute;t nejvy&scaron;&scaron;&iacute; zisk, ale akci, kter&aacute; m&aacute; nejvy&scaron;&scaron;&iacute; o&#269;ek&aacute;vanou hodnotu. V n&#283;kter&yacute;ch situac&iacute;ch je nejlep&scaron;&iacute; akce EV-, co&#382; znamen&aacute;, &#382;e na t&eacute;to akci budete dlouhodob&#283; prohr&aacute;vat. Ale m&#367;&#382;e to b&yacute;t nejlep&scaron;&iacute; mo&#382;n&eacute; rozhodnut&iacute; v p&#345;&iacute;padech, kdy v&scaron;echny ostatn&iacute; mo&#382;nosti maj&iacute; je&scaron;t&#283; ni&#382;&scaron;&iacute; EV.<\/p><h1 style=\"margin-top: 24px\" align=\"left\">O&#269;ek&aacute;van&aacute; hodnota v Texas Hold'emu<\/h1><p class=\"emoNormal\">P&#345;edpokl&aacute;dejme, &#382;e jste ve h&#345;e proti jedin&eacute;mu soupe&#345;i na turnu.<\/p><p class=\"emoNormal\">Dr&#382;&iacute;te: <b>T<\/b><img decoding=\"async\" src=\"\/\/cdn-origin.pokerstrategy.com\/smileys\/club.png\" alt=\"\"> <b>9<\/b><img decoding=\"async\" src=\"\/\/cdn-origin.pokerstrategy.com\/smileys\/club.png\" alt=\"\"><\/p><p class=\"emoNormal\">Board: <b>6<\/b><img decoding=\"async\" src=\"\/\/cdn-origin.pokerstrategy.com\/smileys\/heart.png\" alt=\"\"> <b>7<\/b><img decoding=\"async\" src=\"\/\/cdn-origin.pokerstrategy.com\/smileys\/club.png\" alt=\"\"> <b>2<\/b><img decoding=\"async\" src=\"\/\/cdn-origin.pokerstrategy.com\/smileys\/heart.png\" alt=\"\"> <b>4<\/b><img decoding=\"async\" src=\"\/\/cdn-origin.pokerstrategy.com\/smileys\/diamond.png\" alt=\"\"><\/p><p class=\"emoNormal\">M&aacute;te gutshot na postupku a pot&#345;ebujete trefit osmi&#269;ku. Jste si jist&iacute;, &#382;e soupe&#345; dr&#382;&iacute; overp&aacute;r - n&#283;co jako dv&#283; queeny nebo kingy.<\/p><p class=\"emoNormal\">Va&scaron;e outy jsou v tomto p&#345;&iacute;pad&#283; &#269;ist&eacute; a k v&yacute;h&#345;e pot&#345;ebujete jednu ze &#269;ty&#345; osmi&#269;ek v bal&iacute;&#269;ku. Pom&aacute;haj&iacute; v&aacute;m 4 ze 46 karet, kter&eacute; v bal&iacute;&#269;ku zb&yacute;vaj&iacute;. Pravd&#283;podobnost, &#382;e tref&iacute;te osmi&#269;ku na riveru, je proto 4\/46, co&#382; je 8.7%.<\/p><p class=\"emoNormal\">Pokud p&#345;ijde jak&aacute;koli jin&aacute; karta, pak prohrajete. V bal&iacute;&#269;ku tedy zb&yacute;v&aacute; 46-4=42 karet, kter&eacute; v&aacute;m nepomohou. Pravd&#283;podobnost, &#382;e prohrajete, je tedy 42\/46, co&#382; je 91.3%.<\/p><p class=\"emoNormal\">Te&#271; u&#382; n&aacute;m zb&yacute;v&aacute; pouze stanovit p&#345;&iacute;padn&eacute; zisky a ztr&aacute;ty. V potu je $5. V&aacute;&scaron; soupe&#345; vsadil $1. To znamen&aacute;, &#382;e m&#367;&#382;ete vyhr&aacute;t $6.<\/p><p class=\"emoNormal\">Va&scaron;e ztr&aacute;ta je $1, kter&yacute; mus&iacute;te zaplatit za call.<\/p><p class=\"emoListintro\"><b>EV callu je tedy:<\/b><\/p><p class=\"emoNormal\"><i>EV(call) = <\/i><i>(p&#345;&iacute;padn&yacute; zisk) * (pravd&#283;podobnost v&yacute;hry) - (p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<\/i><br> <i> EV(call) = $6 * 8.7% - $1 * 91.3%<br> <b><u> EV(call) = - $0.39<\/u><\/b> <\/i><\/p><p class=\"emoNormal\">Z&aacute;porn&aacute; hodnota znamen&aacute;, &#382;e v pr&#367;m&#283;ru na tomto rozhodnut&iacute; budete prod&#283;l&aacute;vat. M&#367;&#382;ete o&#269;ek&aacute;vat ztr&aacute;tu ve v&yacute;&scaron;i $0.39 z ka&#382;d&eacute;ho $1, kter&yacute; takto investujete; jinak &#345;e&#269;eno, z ka&#382;d&eacute;ho $1, kter&yacute; investujete, se v&aacute;m vr&aacute;t&iacute; jen $0.61. Nic moc investice a jasn&yacute; p&#345;&iacute;pad EV-.<\/p><p class=\"emoNormal\">Tady se ov&scaron;em nezastav&iacute;me. U&#382; sice v&iacute;me, jakou ztr&aacute;tu m&#367;&#382;eme o&#269;ek&aacute;vat z na&scaron;eho callu, ale pot&#345;ebujeme je&scaron;t&#283; stanovit EV pro v&scaron;echny p&#345;&iacute;pustn&eacute; akce, abychom zjistili, kter&eacute; rozhodnut&iacute; je nejlep&scaron;&iacute;.<\/p><p class=\"emoNormal\">EV foldu je v&#382;dy nula.<\/p><p class=\"emoNormal\"><b>EV(fold) = $0<\/b><\/p><p class=\"emoNormal\">Neinvestujete tedy &#382;&aacute;dn&eacute; dal&scaron;&iacute; pen&iacute;ze, co&#382; sni&#382;uje va&scaron;e p&#345;&iacute;padn&eacute; dal&scaron;&iacute; ztr&aacute;ty na nulu. Stejn&eacute; lze ov&scaron;em &#345;&iacute;ci i o v&yacute;hr&aacute;ch, proto&#382;e t&#283;&#382;ko m&#367;&#382;ete vyhr&aacute;t handu, kdy&#382; foldnete. Na tomto m&iacute;st&#283; se mnoho lid&iacute; pt&aacute;: \"A co pen&iacute;ze, kter&eacute; jsme ji&#382; do handy investovali v p&#345;edchoz&iacute;m pr&#367;b&#283;hu?\" Odpov&#283;&#271;: Na tyto pen&iacute;ze zapome&#328;te - u&#382; nejsou va&scaron;e.<\/p><p class=\"emoListintro\"><b>Porovn&aacute;n&iacute;m EV v&scaron;ech p&#345;&iacute;pustn&yacute;ch akc&iacute; dosp&#283;jeme ke spr&aacute;vn&eacute;mu rozhodnut&iacute;: <br><\/b><\/p><p class=\"emoNormal\"><i>EV(fold) = $0<br> EV (call) = -$0.39<br> <b><u> EV(fold) &gt; EV(call)<\/u><\/b> <\/i><\/p><p class=\"emoNormal\">Zde je jasn&#283; vid&#283;t, &#382;e je pro v&aacute;s v&yacute;hodn&#283;j&scaron;&iacute; foldovat ne&#382; callovat.<\/p><h1 align=\"left\">Dal&scaron;&iacute; vyu&#382;it&iacute;<\/h1><p class=\"emoNormal\">Hr&aacute;t dob&#345;e poker znamen&aacute; v konkr&eacute;tn&iacute;ch situac&iacute;ch d&#283;lat rozhodnut&iacute; s nejvy&scaron;&scaron;&iacute; EV. Kdykoli je o&#269;ek&aacute;van&aacute; hodnota n&#283;jak&eacute; akce vy&scaron;&scaron;&iacute; ne&#382; 0, v&#382;dy proveden&iacute;m t&eacute;to akce generujete zisk.<\/p><p class=\"emoNormal\">Jakmile si za&#269;nete pohr&aacute;vat se vzorcem pro EV (co&#382; byste m&#283;li ud&#283;lat nap&#345;&iacute;klad b&#283;hem anal&yacute;z odehran&yacute;ch her, ve kter&yacute;ch si nejste jist&iacute;, zda jste se rozhodli spr&aacute;vn&#283;), m&#367;&#382;ete si polo&#382;it ot&aacute;zku typu: Jak velk&yacute; by musel b&yacute;t pot, aby se vyplatilo s gutshotem dorovnat s&aacute;zku $1? Poj&#271;me si to uk&aacute;zat.<\/p><p class=\"emoNormal\">Velikost potu znamen&aacute; pro na&scaron;e &uacute;&#269;ely \"p&#345;&iacute;padn&yacute; zisk\":<\/p><p class=\"emoNormal\"><i>EV(call) = <\/i><i>(p&#345;&iacute;padn&yacute; zisk) * (pravd&#283;podobnost v&yacute;hry) - (p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<\/i><\/p><p class=\"emoListintro\"><b>Zaj&iacute;m&aacute; n&aacute;s, ve kter&eacute;m okam&#382;iku se EV p&#345;ehoupne p&#345;es nulu:<\/b><\/p><p class=\"emoNormal\"><i>EV(call) &gt; 0<\/i><\/p><p class=\"emoListintro\">Vzorec m&#367;&#382;eme upravit tak, abychom vid&#283;li, jak velk&yacute; mus&iacute; b&yacute;t pot na to, abychom dostali kladnou EV:<\/p><p class=\"emoNormal\"><i>EV callu je &gt; 0, kdy&#382;:<br> <\/i><i>&nbsp;<\/i><i>(p&#345;&iacute;padn&yacute; zisk) * (pravd&#283;podobnost v&yacute;hry) - (p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<\/i><i> &gt; 0<\/i><\/p><p class=\"emoNormal\">Nyn&iacute; mus&iacute;me zvl&aacute;dnout p&aacute;r v&#283;c&iacute; nar&aacute;z. Nelze vylou&#269;it, &#382;e si budete muset opr&aacute;&scaron;it sv&eacute; znalosti z hodin matematiky, abyste nem&#283;li probl&eacute;my pochopit n&aacute;sleduj&iacute;c&iacute; &uacute;pravy na&scaron;&iacute; nerovnice, ale snad ani ne.<\/p><p class=\"emoNormal\"><i>EV(call) je &gt; 0, kdy&#382;:<br> <\/i><i>&nbsp;<\/i><i>(p&#345;&iacute;padn&yacute; zisk) * (pravd&#283;podobnost v&yacute;hry) - (p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<\/i><i> &gt; 0<\/i><i>, co&#382; lze vyj&aacute;d&#345;it jako:<br><\/i><i>(p&#345;&iacute;padn&yacute; zisk) * (pravd&#283;podobnost v&yacute;hry) <\/i><i>&gt; <\/i><i>(p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<\/i><i>, co&#382; lze vyj&aacute;d&#345;it jako: <\/i><br> <i> <\/i><i>(p&#345;&iacute;padn&yacute; zisk)<\/i><i> &gt;&nbsp;<\/i><i>&nbsp;<\/i><i>(p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<\/i><i> \/ <\/i><i>(pravd&#283;podobnost v&yacute;hry)<\/i><\/p><p class=\"emoListintro\">Nyn&iacute; jsme izolovali na&scaron;i nezn&aacute;mou prom&#283;nnou na lev&eacute; stran&#283; rovnice a m&#367;&#382;eme tedy dosadit hodnoty, kter&eacute; zn&aacute;me, &#269;&iacute;m&#382; se dopracujeme k v&yacute;sledku.<\/p><p class=\"emoNormal\"><i> <\/i><i>(<\/i><i>p&#345;&iacute;padn&aacute; ztr&aacute;ta<\/i><i>)<\/i><i> = $1<br> <\/i><i>(<\/i><i>pravd&#283;podobnost prohry<\/i><i>)<\/i><i> = 42\/46<br> <\/i><i>(<\/i><i>pravd&#283;podobnost v&yacute;hry<\/i><i>) <\/i><i>= 4\/46 <\/i><\/p><p class=\"emoNormal\"><b>T&iacute;m dost&aacute;v&aacute;me tento v&yacute;sledek:<\/b><br> <i><br> <\/i><i>(p&#345;&iacute;padn&yacute; zisk)<\/i><i> &gt;&nbsp;<\/i><i>(p&#345;&iacute;padn&aacute; ztr&aacute;ta) * (pravd&#283;podobnost prohry)<\/i><i> \/ <\/i><i>(pravd&#283;podobnost v&yacute;hry)<\/i><br><i>(p&#345;&iacute;padn&yacute; zisk) <\/i><i>&gt; $1 * (42\/46) \/ (4\/46)<br><\/i><i>(p&#345;&iacute;padn&yacute; zisk) <\/i><i>&nbsp;<\/i><i>&gt; $1 * 1932\/184<br><\/i><i>(p&#345;&iacute;padn&yacute; zisk) <\/i><i>&nbsp;<\/i><i><u><b>&gt; $10.5<\/b><\/u> <\/i><\/p><p class=\"emoNormal\">To znamen&aacute;, &#382;e pot mus&iacute; b&yacute;t vy&scaron;&scaron;&iacute; ne&#382; $10.50, aby investice $1 s gutshotem byla ziskov&aacute;. Ji&#382; byste m&#283;li zn&aacute;t odds pro gutshot na turnu, kter&eacute; jsou 1:11. Z toho d&#367;vodu si m&#367;&#382;ete dovolit docallovat v p&#345;&iacute;padech, kdy v potu je alespo&#328; 11x v&iacute;ce, ne&#382; m&aacute;te docallovat.<\/p><p class=\"emoNormal\">Metoda o&#269;ek&aacute;van&eacute; hodnoty v&aacute;s p&#345;ivede ke stejn&eacute;mu v&yacute;sledku, ke kter&eacute;mu byste se dopracovali pomoc&iacute; v&yacute;po&#269;tu odds. Ve skute&#269;nosti je mezi t&#283;mito p&#345;&iacute;stupy velice jednoduch&yacute; vztah. Jak jsme ji&#382; zm&iacute;nili v&yacute;&scaron;e - pravd&#283;podobnost, &#382;e tref&iacute;te jeden z va&scaron;ich &#269;ty&#345; out&#367; na postupku, je 4\/46, co&#382; odpov&iacute;d&aacute; &scaron;anci 8.7%.<\/p><p class=\"emoNormal\">Jin&yacute;mi slovy: Postupku v t&eacute;to situaci tref&iacute;te p&#345;ibli&#382;n&#283; jednou ze 12 p&#345;&iacute;pad&#367; (100% \/ 8.7%). Proto jsou odds 11:1 ve v&aacute;&scaron; neprosp&#283;ch, co&#382; znamen&aacute;, &#382;e ze 12 p&#345;&iacute;pad&#367; 11kr&aacute;t sv&#367;j out netref&iacute;te a 1kr&aacute;t ano. Jak si m&#367;&#382;ete pov&scaron;imnout, EV je p&#345;&iacute;mo p&#345;evoditeln&aacute; na odds, kter&eacute; v sob&#283; zahrnuj&iacute; tak&eacute; pot odds.<\/p><p class=\"emoNormal\">Z&aacute;kladn&iacute; my&scaron;lenka obou princip&#367; je shodn&aacute;, jen jsme k t&eacute;mu&#382; v&yacute;sledku do&scaron;li jin&yacute;m zp&#367;sobem.<\/p><h1 style=\"margin-top: 24px\" align=\"left\">Z&aacute;v&#283;r<\/h1><p class=\"emoNormal\">Poj&#271;me si na z&aacute;v&#283;r shrnout to nejd&#367;le&#382;it&#283;j&scaron;&iacute; z tohoto &#269;l&aacute;nku. O&#269;ek&aacute;vanou hodnotu spo&#269;&iacute;t&aacute;te tak, &#382;e porovn&aacute;te p&#345;&iacute;padn&eacute; prohry s p&#345;&iacute;padn&yacute;mi v&yacute;hrami.<\/p><p class=\"emoNormal\"><i>EV = <\/i><i>(p&#345;&iacute;padn&aacute; v&yacute;hra) * (pravd&#283;podobnost v&yacute;hry) - (p&#345;&iacute;padn&aacute; prohra) * (pravd&#283;podobnost prohry)<\/i><\/p><p class=\"emoNormal\">EV v&aacute;m &#345;&iacute;k&aacute;, kolik v pr&#367;m&#283;ru vyhrajete\/prohrajete.<\/p><p class=\"emoNormal\">Na v&yacute;hry a na prohry m&#367;&#382;ete nahl&iacute;&#382;et jako na v&yacute;sledek a pou&#382;&iacute;vat tak jednodu&scaron;&scaron;&iacute; vzorec:<\/p><p class=\"emoNormal\"><i>EV = Pravd&#283;podobnost<sub>1<\/sub> * V&yacute;sledek<sub>1<\/sub> + Pravd&#283;podobnost<sub>2<\/sub> * V&yacute;sledek<sub>2<\/sub> + ... + Pravd&#283;podobnost<sub>n<\/sub> * V&yacute;sledek<sub>n<\/sub><\/i><\/p><p class=\"emoNormal\">Kladn&yacute; v&yacute;sledek znamen&aacute;, &#382;e dosahujete zisk&#367;, z&aacute;porn&yacute; v&yacute;sledek pak signalizuje ztr&aacute;ty.<\/p><p class=\"emoNormal\">P&#345;i rozboru situace mus&iacute;te vz&iacute;t v &uacute;vahu v&scaron;echny p&#345;&iacute;pustn&eacute; ud&aacute;losti, jejich jednotliv&eacute; pravd&#283;podobnosti a kolik v ka&#382;d&eacute; z t&#283;chto situac&iacute; vyhrajete nebo prohrajete. Pak u&#382; jen dosad&iacute;te tyto hodnoty do vzorce a zjist&iacute;te EV dan&eacute; akce.<\/p><p class=\"emoNormal\">Pokud m&aacute;te na v&yacute;b&#283;r z v&#283;t&scaron;&iacute;ho mno&#382;stv&iacute; akc&iacute; a chcete zjistit, kter&aacute; z nich je pro v&aacute;s nejp&#345;&iacute;zniv&#283;j&scaron;&iacute;, spo&#269;&iacute;t&aacute;te si o&#269;ek&aacute;vanou hodnotu ka&#382;d&eacute; z t&#283;chto akc&iacute;. Pot&eacute; u&#382; jen porovn&aacute;te EV jednotliv&yacute;ch akc&iacute; a pochopiteln&#283; si vyberete tu s nejvy&scaron;&scaron;&iacute; EV.<\/p><p class=\"emoNormal\">Nyn&iacute; jste se dozv&#283;d&#283;li, jak do sv&eacute; hry zakomponovat novou matematickou &uacute;rove&#328; t&iacute;m, &#382;e jste schopni ur&#269;it EV konkr&eacute;tn&iacute;ch rozhodnut&iacute; v dan&eacute; situaci. Zpo&#269;&aacute;tku se tyto v&yacute;po&#269;ty mohou jevit jako komplikovan&eacute;, ale opravdu nejsou, co&#382; uzn&aacute;te sami, jakmile si na n&#283; zvyknete. Pokud naraz&iacute;te na n&#283;jak&yacute; probl&eacute;m, nev&aacute;hejte se na n&#283;j zeptat na na&scaron;em f&oacute;ru.<\/p><p class=\"emoNormal\">Mnoho &#269;l&aacute;nk&#367; a koncept&#367;, na kter&eacute; v budoucnu naraz&iacute;te, operuje s v&yacute;po&#269;tem EV pro v&scaron;echny p&#345;&iacute;pustn&eacute; situace. Dejte si &#269;as na zvl&aacute;dnut&iacute; konceptu EV, proto&#382;e je to v&aacute;&scaron; dal&scaron;&iacute; krok v pokerov&eacute;m v&yacute;voji, pot&eacute; co jste zvl&aacute;dli koncept odds a out&#367;.<\/p><table border=\"0\" cellspacing=\"0\" class=\"emoLinkbox\" style=\"margin-top: 24px\">\n<tbody>\n<tr>\n<td class=\"emoLinkbox1\">ODKAZY<\/td>\n<td class=\"emoLinkbox2\">&nbsp;<\/td>\n<\/tr>\n<tr>\n<td class=\"emoLinkboxinner\" colspan=\"2\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"emoLinkboxicon\"><img decoding=\"async\" src=\"\/\/www.pokerstrategy.com\/download\/content\/bilder\/ps_icon_artikel.jpg\" alt=\"\" width=\"33\" height=\"25\"><\/td>\n<td class=\"emoLinkboxlinks\" colspan=\"2\"><b>Souvisej&iacute;c&iacute; &#269;l&aacute;nky:<br> <\/b><a href=\"\/strategy\/fixed-limit\/173\/\">Po flopu: Matematika pokeru - odds &amp; outy<\/a><br> <a href=\"\/strategy\/fixed-limit\/1175\/\">Po flopu: Kdy value raisovat na flopu s draw<\/a><a href=\"\/strategy\/fixed-limit\/1175\/\"><\/a><\/td>\n<\/tr>\n<tr>\n<td class=\"emoLinkboxicon\"><img decoding=\"async\" src=\"\/\/www.pokerstrategy.com\/download\/content\/bilder\/ps_icon_forum.jpg\" alt=\"\" width=\"32\" height=\"24\"><\/td>\n<td class=\"emoLinkboxlinks\" colspan=\"2\"><b>Diskusn&iacute; f&oacute;rum:<br><\/b><a href=\"\/forum\/board.php?boardid=1372\">Diskutujte o tomto &#269;l&aacute;nku na f&oacute;ru<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>V tomto \u010dl\u00e1nku se sezn\u00e1m\u00edme s pojmem o\u010dek\u00e1van\u00e9 hodnoty (EV), nau\u010d\u00edme se ji po\u010d\u00edtat a uk\u00e1\u017eeme si, jak v\u00e1m pom\u00e1h\u00e1 v rozboru va\u0161\u00ed hry a ve zdokonalov\u00e1n\u00ed se v pokeru.<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"_lmt_disableupdate":"","_lmt_disable":""},"strategy_category":[33],"strategy_level":[116],"class_list":["post-2877","strategy","type-strategy","status-publish","hentry","strategy_category-fixed-limit-basic"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Matematika: V \u010dem v\u00e1m pom\u016f\u017ee znalost o\u010dek\u00e1van\u00e9 hodnoty (EV)? - Pokerstrategy Czech<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pokerstrategy.com\/cs\/strategy\/fixed-limit\/matematika-znalost-expected-value-ev\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Matematika: V \u010dem v\u00e1m pom\u016f\u017ee znalost o\u010dek\u00e1van\u00e9 hodnoty (EV)? - Pokerstrategy Czech\" \/>\n<meta property=\"og:description\" content=\"V tomto \u010dl\u00e1nku se sezn\u00e1m\u00edme s pojmem o\u010dek\u00e1van\u00e9 hodnoty (EV), nau\u010d\u00edme se ji po\u010d\u00edtat a uk\u00e1\u017eeme si, jak v\u00e1m pom\u00e1h\u00e1 v rozboru va\u0161\u00ed hry a ve zdokonalov\u00e1n\u00ed se v pokeru.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.pokerstrategy.com\/cs\/strategy\/fixed-limit\/matematika-znalost-expected-value-ev\/\" \/>\n<meta property=\"og:site_name\" content=\"Pokerstrategy Czech\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-11T10:59:43+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"19 minut\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.pokerstrategy.com\\\/cs\\\/strategy\\\/fixed-limit\\\/matematika-znalost-expected-value-ev\\\/\",\"url\":\"https:\\\/\\\/www.pokerstrategy.com\\\/cs\\\/strategy\\\/fixed-limit\\\/matematika-znalost-expected-value-ev\\\/\",\"name\":\"Matematika: V \u010dem v\u00e1m pom\u016f\u017ee znalost o\u010dek\u00e1van\u00e9 hodnoty (EV)? 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