{"id":2553,"date":"2023-07-21T18:27:56","date_gmt":"2023-07-21T18:27:56","guid":{"rendered":"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/"},"modified":"2023-07-21T18:27:56","modified_gmt":"2023-07-21T18:27:56","slug":"test-manna-whitneya-w-sas","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/","title":{"rendered":"Jak wykona\u0107 test u manna-whitneya w sas"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><strong>Test U Manna-Whitneya<\/strong> (czasami nazywany testem sumy rang Wilcoxona) s\u0142u\u017cy do por\u00f3wnywania r\u00f3\u017cnic mi\u0119dzy dwiema pr\u00f3bami, gdy rozk\u0142ad pr\u00f3bek nie ma rozk\u0142adu normalnego, a rozmiary pr\u00f3bek s\u0105 ma\u0142e (n &lt; 30).<\/span><\/p>\n<p> <span style=\"color: #000000;\">Uwa\u017ca si\u0119, \u017ce jest to nieparametryczny odpowiednik <a href=\"https:\/\/statorials.org\/pl\/przetestuj-dwie-probki\/\" target=\"_blank\" rel=\"noopener\">testu t dla dw\u00f3ch pr\u00f3bek<\/a> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">W tym samouczku wyja\u015bniono, jak wykona\u0107 test U Manna-Whitneya w SAS.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad: Test U Manna-Whitneya w SAS<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Za\u0142\u00f3\u017cmy, \u017ce badacze chc\u0105 wiedzie\u0107, czy uzdatnianie paliwa powoduje zmian\u0119 \u015bredniego zu\u017cycia paliwa przez samoch\u00f3d. Aby to sprawdzi\u0107, przeprowadzaj\u0105 eksperyment, w kt\u00f3rym mierz\u0105 mpg 12 samochod\u00f3w z uzdatnianiem paliwa i 12 samochod\u00f3w bez oczyszczania.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Wyniki przedstawiono poni\u017cej:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-22701 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/mannsas1.jpg\" alt=\"\" width=\"151\" height=\"321\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Poniewa\u017c liczebno\u015b\u0107 pr\u00f3bek jest ma\u0142a i podejrzewa si\u0119, \u017ce rozk\u0142ad pr\u00f3bek nie ma <a href=\"https:\/\/statorials.org\/pl\/hipoteza-normalnosci\/\" target=\"_blank\" rel=\"noopener\">rozk\u0142adu normalnego<\/a> , decyduj\u0105 si\u0119 na wykonanie testu U Manna-Whitneya w celu ustalenia, czy istnieje statystycznie istotna r\u00f3\u017cnica w mpg pomi\u0119dzy obiema grupami.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Wykonaj poni\u017csze kroki, aby wykona\u0107 test U Manna-Whitneya w SAS.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Krok 1: Utw\u00f3rz zbi\u00f3r danych<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Najpierw u\u017cyjemy poni\u017cszego kodu do utworzenia zbioru danych w SAS-ie:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">\/*create dataset*\/\n<\/span><span style=\"color: #800080;\">data<\/span> mpg_data;\n    <span style=\"color: #3366ff;\">input<\/span> group $mpg;\n    <span style=\"color: #3366ff;\">datalines<\/span> ;\ntreated 24\ntreated 25\ntreated 21\ntreated 22\ntreated 23\ntreated 18\ntreated 17\ntreated 28\ntreated 24\ntreated 27\ntreated 21\ntreated 23\nuntreated 20\nuntreated 23\nuntreated 21\nuntreated 25\nuntreated 18\nuntreated 17\nuntreated 18\nuntreated 24\nuntreated 20\nuntreated 24\nuntreated 23\nuntreated 19\n;\n<span style=\"color: #800080;\">run<\/span> ;\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Krok 2: Wykonaj test U Manna-Whitneya<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Nast\u0119pnie u\u017cyjemy <strong>proc npar1way<\/strong> do wykonania testu U Manna Whitneya:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #800080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">\/*perform Mann Whitney U test*\/\n<\/span><span style=\"color: #800080;\">proc npar1way<\/span> <span style=\"color: #3366ff;\">data<\/span> =mpg_data <span style=\"color: #3366ff;\">wilcoxon<\/span> ;\n    <span style=\"color: #3366ff;\">classgroup<\/span> ;\n    <span style=\"color: #3366ff;\">var<\/span> mpg;<\/span>\nrun;<\/span><\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-22704 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/homme1.jpg\" alt=\"\" width=\"374\" height=\"416\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Z tabeli testu Wilcoxona dla dw\u00f3ch pr\u00f3bek widzimy, \u017ce dwustronna warto\u015b\u0107 p testu wynosi <strong>0,2114<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Nale\u017cy pami\u0119ta\u0107, \u017ce test U Manna-Whitneya wykorzystuje nast\u0119puj\u0105ce hipotezy zerowe i alternatywne:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>H <sub>0<\/sub><\/strong> : Obie populacje maj\u0105 t\u0119 sam\u0105 median\u0119.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>H <sub>A<\/sub><\/strong> : Obie populacje maj\u0105 r\u00f3\u017cne mediany.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Poniewa\u017c warto\u015b\u0107 p testu ( <strong>0,2114<\/strong> ) jest nie mniejsza ni\u017c 0,05, nie udaje nam si\u0119 odrzuci\u0107 hipotezy zerowej.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Oznacza to, \u017ce nie mamy wystarczaj\u0105cych dowod\u00f3w, aby stwierdzi\u0107, \u017ce zu\u017cycie paliwa w mpg r\u00f3\u017cni si\u0119 w przypadku samochod\u00f3w, kt\u00f3re s\u0105 poddawane uzdatnianiu paliwa, i tych, kt\u00f3re tego nie robi\u0105.<\/span><\/p>\n<p> <span style=\"color: #000000;\">SAS udost\u0119pnia r\u00f3wnie\u017c wykresy skrzynkowe do wizualizacji rozk\u0142adu warto\u015bci mpg dla ka\u017cdej grupy:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-22705 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/homme2.jpg\" alt=\"\" width=\"575\" height=\"433\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Z wykresu wida\u0107, \u017ce samochody poddane obr\u00f3bce paliwowej mia\u0142y zazwyczaj wy\u017csze warto\u015bci mpg, ale z wynik\u00f3w testu U Manna Whitneya wiemy, \u017ce r\u00f3\u017cnice pomi\u0119dzy obiema grupami nie by\u0142y istotne statystycznie.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne popularne testy statystyczne w SAS-ie:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/probka-testowa-t-w-sluzie-powietrznej\/\" target=\"_blank\" rel=\"noopener\">Jak wykona\u0107 test t dla jednej pr\u00f3by w SAS<\/a><br \/> Jak wykona\u0107 test t dla dw\u00f3ch pr\u00f3bek w SAS<br \/> <a href=\"https:\/\/statorials.org\/pl\/sparowany-test-t-w-sas\/\" target=\"_blank\" rel=\"noopener\">Jak wykona\u0107 test t dla sparowanych pr\u00f3bek w SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/test-rangi-znaku-wilcoxona-w-sluzie\/\" target=\"_blank\" rel=\"noopener\">Jak wykona\u0107 test rangowy ze znakiem Wilcoxona w SAS<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Test U Manna-Whitneya (czasami nazywany testem sumy rang Wilcoxona) s\u0142u\u017cy do por\u00f3wnywania r\u00f3\u017cnic mi\u0119dzy dwiema pr\u00f3bami, gdy rozk\u0142ad pr\u00f3bek nie ma rozk\u0142adu normalnego, a rozmiary pr\u00f3bek s\u0105 ma\u0142e (n &lt; 30). Uwa\u017ca si\u0119, \u017ce jest to nieparametryczny odpowiednik testu t dla dw\u00f3ch pr\u00f3bek . W tym samouczku wyja\u015bniono, jak wykona\u0107 test U Manna-Whitneya w SAS. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-2553","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Jak wykona\u0107 test U Manna-Whitneya w SAS - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak wykona\u0107 test U Manna-Whitneya w SAS, wraz z pe\u0142nym przyk\u0142adem.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak wykona\u0107 test U Manna-Whitneya w SAS - Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak wykona\u0107 test U Manna-Whitneya w SAS, wraz z pe\u0142nym przyk\u0142adem.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-21T18:27:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/mannsas1.jpg\" \/>\n<meta name=\"author\" content=\"Benjamin Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/\",\"url\":\"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/\",\"name\":\"Jak wykona\u0107 test U Manna-Whitneya w SAS - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-21T18:27:56+00:00\",\"dateModified\":\"2023-07-21T18:27:56+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak wykona\u0107 test U Manna-Whitneya w SAS, wraz z pe\u0142nym przyk\u0142adem.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/test-manna-whitneya-w-sas\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak wykona\u0107 test u manna-whitneya w sas\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pl\/#website\",\"url\":\"https:\/\/statorials.org\/pl\/\",\"name\":\"Statorials\",\"description\":\"Tw\u00f3j przewodnik po kompetencjach statystycznych!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\",\"name\":\"Benjamin Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin Anderson\"},\"description\":\"Cze\u015b\u0107, jestem Benjamin i jestem emerytowanym profesorem statystyki, kt\u00f3ry zosta\u0142 oddanym nauczycielem Statorials. 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