{"id":623,"date":"2023-07-29T07:15:08","date_gmt":"2023-07-29T07:15:08","guid":{"rendered":"https:\/\/statorials.org\/pl\/test-stanu-mcnemara\/"},"modified":"2023-07-29T07:15:08","modified_gmt":"2023-07-29T07:15:08","slug":"test-stanu-mcnemara","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/test-stanu-mcnemara\/","title":{"rendered":"Jak wykona\u0107 test mcnemara w stata"},"content":{"rendered":"

<\/p>\n

\n

Test McNemara<\/strong> to test, za pomoc\u0105 kt\u00f3rego mo\u017cemy okre\u015bli\u0107, czy istnieje statystycznie istotna r\u00f3\u017cnica w proporcjach mi\u0119dzy sparowanymi danymi.<\/span><\/p>\n

W tym samouczku wyja\u015bniono, jak wykona\u0107 test McNemara w Stata.<\/span><\/p>\n

Przyk\u0142ad: test McNemara w Stata<\/strong><\/span><\/h2>\n

Za\u0142\u00f3\u017cmy, \u017ce badacze chc\u0105 wiedzie\u0107, czy okre\u015blony film marketingowy mo\u017ce zmieni\u0107 opinie ludzi na temat konkretnego prawa. Przeprowadzaj\u0105 ankiet\u0119 w\u015br\u00f3d 100 os\u00f3b, aby dowiedzie\u0107 si\u0119, czy popieraj\u0105 prawo. Nast\u0119pnie pokazuj\u0105 film marketingowy wszystkim 100 osobom i ponownie przeprowadzaj\u0105 z nimi ankiet\u0119 po zako\u0144czeniu filmu.<\/span><\/p>\n

Poni\u017csza tabela przedstawia \u0142\u0105czn\u0105 liczb\u0119 os\u00f3b, kt\u00f3re popar\u0142y ustaw\u0119 przed i po obejrzeniu filmu:<\/span><\/p>\n\n\n\n\n\n\n
<\/th>\n Film przed marketingiem<\/span><\/th>\n<\/tr>\n
Film po wprowadzeniu na rynek<\/span><\/td>\n Wsparcie<\/span><\/strong><\/td>\n Nie mog\u0119 znie\u015b\u0107<\/strong><\/span><\/td>\n<\/tr>\n
Wsparcie<\/strong><\/span><\/td>\n 30<\/span><\/td>\n 40<\/span><\/td>\n<\/tr>\n
Nie mog\u0119 znie\u015b\u0107<\/strong><\/span><\/td>\n 12<\/span><\/td>\n 18<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Aby ustali\u0107, czy istnia\u0142a statystycznie istotna r\u00f3\u017cnica w odsetku os\u00f3b popieraj\u0105cych prawo przed i po obejrzeniu filmu, mo\u017cemy wykona\u0107 test McNemara.<\/span><\/p>\n

W Stacie mo\u017cemy u\u017cy\u0107 polecenia mcci<\/strong> do wykonania testu McNemara. Liczby wprowadzamy do tabeli 2×2 od lewej do prawej, od g\u00f3ry do do\u0142u:<\/span><\/p>\n

\n

McCi 30 40 12 18<\/strong><\/span> <\/p>\n<\/blockquote>\n

\"Wynik<\/p>\n

Oto jak zinterpretowa\u0107 wynik:<\/span><\/p>\n

Tabela 2 \u00d7 2:<\/strong> Stata wy\u015bwietla tabel\u0119 zlicze\u0144 2 \u00d7 2 przy u\u017cyciu konwencjonalnych etykiet cz\u0119sto spotykanych w badaniach kliniczno-kontrolnych. Widzimy, \u017ce suma kont wynosi 100.<\/span><\/p>\n

Chi2(1) McNemara:<\/strong> To jest statystyka testu chi-kwadrat, kt\u00f3ra wynosi 15,08. Stata u\u017cywa nast\u0119puj\u0105cego wzoru do obliczenia tej warto\u015bci: (40-12) 2<\/sup> \/ (40+12) = 784 \/ 52 = 15,0769.<\/span><\/p>\n

Prob > chi2:<\/strong> Jest to warto\u015b\u0107 p powi\u0105zana ze statystyk\u0105 testu chi-kwadrat. Okazuje si\u0119, \u017ce jest to 0,0001. Poniewa\u017c warto\u015b\u0107 ta jest mniejsza ni\u017c 0,05, mo\u017cemy odrzuci\u0107 hipotez\u0119 zerow\u0105 i stwierdzi\u0107, \u017ce odsetek os\u00f3b, kt\u00f3re popar\u0142y prawo przed i po obejrzeniu filmu marketingowego, r\u00f3\u017cni\u0142 si\u0119 istotnie statystycznie.<\/span><\/p>\n

Uwaga dotycz\u0105ca obliczania chi-kwadrat<\/strong><\/span><\/h3>\n

Bior\u0105c pod uwag\u0119 nast\u0119puj\u0105c\u0105 tabel\u0119 2×2:<\/span><\/p>\n\n\n\n\n\n\n
<\/th>\n Film przed marketingiem<\/span><\/th>\n<\/tr>\n
Film po wprowadzeniu na rynek<\/span><\/td>\n Wsparcie<\/span><\/strong><\/td>\n Nie mog\u0119 znie\u015b\u0107<\/strong><\/span><\/td>\n<\/tr>\n
Wsparcie<\/strong><\/span><\/td>\n MA<\/span><\/td>\n B<\/span><\/td>\n<\/tr>\n
Nie mog\u0119 znie\u015b\u0107<\/strong><\/span><\/td>\n VS<\/span><\/td>\n D<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Stata u\u017cywa wzoru (BC) 2<\/sup> \/ (B+C) do obliczenia statystyki testu Chi-kwadrat.<\/span><\/p>\n

Jednak\u017ce niekt\u00f3re podr\u0119czniki statystyki sugeruj\u0105 stosowanie wzoru (|BC| \u2013 1) 2<\/sup> \/ (B+C) jako korekty ci\u0105g\u0142o\u015bci, gdy niekt\u00f3re liczby w tabeli s\u0105 ma\u0142e. Zwykle t\u0119 korekt\u0119 stosuje si\u0119, gdy liczba kom\u00f3rek jest mniejsza ni\u017c 5.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Test McNemara to test, za pomoc\u0105 kt\u00f3rego mo\u017cemy okre\u015bli\u0107, czy istnieje statystycznie istotna r\u00f3\u017cnica w proporcjach mi\u0119dzy sparowanymi danymi. W tym samouczku wyja\u015bniono, jak wykona\u0107 test McNemara w Stata. Przyk\u0142ad: test McNemara w Stata Za\u0142\u00f3\u017cmy, \u017ce badacze chc\u0105 wiedzie\u0107, czy okre\u015blony film marketingowy mo\u017ce zmieni\u0107 opinie ludzi na temat konkretnego prawa. Przeprowadzaj\u0105 ankiet\u0119 w\u015br\u00f3d 100 […]<\/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-623","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nJak wykona\u0107 test McNemara w Stata - Statorials<\/title>\n<meta name=\"description\" content=\"Proste wyja\u015bnienie jak wykona\u0107 test McNemara w Stata, wraz z przyk\u0142adem krok po kroku.\" \/>\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-stanu-mcnemara\/\" \/>\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 McNemara w Stata - Statorials\" \/>\n<meta property=\"og:description\" content=\"Proste wyja\u015bnienie jak wykona\u0107 test McNemara w Stata, wraz z przyk\u0142adem krok po kroku.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/test-stanu-mcnemara\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-29T07:15:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/mcnemarstata1.png\" \/>\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-stanu-mcnemara\/\",\"url\":\"https:\/\/statorials.org\/pl\/test-stanu-mcnemara\/\",\"name\":\"Jak wykona\u0107 test McNemara w Stata - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-29T07:15:08+00:00\",\"dateModified\":\"2023-07-29T07:15:08+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"Proste wyja\u015bnienie jak wykona\u0107 test McNemara w Stata, wraz z przyk\u0142adem krok po kroku.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/test-stanu-mcnemara\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/test-stanu-mcnemara\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/test-stanu-mcnemara\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak wykona\u0107 test mcnemara w stata\"}]},{\"@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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