{"id":1597,"date":"2023-07-25T17:34:04","date_gmt":"2023-07-25T17:34:04","guid":{"rendered":"https:\/\/statorials.org\/tr\/nemenyi-piton-testi\/"},"modified":"2023-07-25T17:34:04","modified_gmt":"2023-07-25T17:34:04","slug":"nemenyi-piton-testi","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/nemenyi-piton-testi\/","title":{"rendered":"Python'da nemenyi post-hoc testi nas\u0131l ger\u00e7ekle\u015ftirilir"},"content":{"rendered":"

<\/p>\n

\n

Friedman testi,<\/a> tekrarlanan ANOVA \u00f6l\u00e7\u00fcmlerine<\/a> parametrik olmayan bir alternatiftir. Her grupta ayn\u0131 deneklerin yer ald\u0131\u011f\u0131 \u00fc\u00e7 veya daha fazla grubun ortalamalar\u0131 aras\u0131nda istatistiksel olarak anlaml\u0131 bir fark olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in kullan\u0131l\u0131r.<\/span><\/p>\n

Friedman testinden elde edilen p de\u011feri istatistiksel olarak anlaml\u0131ysa, hangi gruplar\u0131n farkl\u0131 oldu\u011funu tam olarak belirlemek i\u00e7in Nemenyi post-hoc testini<\/strong> uygulayabiliriz.<\/span><\/p>\n

A\u015fa\u011f\u0131daki ad\u0131m ad\u0131m \u00f6rnek, Python’da Nemenyi testinin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fini g\u00f6sterir.<\/span><\/p>\n

1. Ad\u0131m: Verileri olu\u015fturun<\/strong><\/h3>\n

Bir ara\u015ft\u0131rmac\u0131n\u0131n, hastalar\u0131n reaksiyon s\u00fcrelerinin \u00fc\u00e7 farkl\u0131 ilaca e\u015fit olup olmad\u0131\u011f\u0131n\u0131 bilmek istedi\u011fini varsayal\u0131m. Bunu test etmek i\u00e7in 10 farkl\u0131 hastan\u0131n \u00fc\u00e7 ilac\u0131n her birine tepki s\u00fcresini (saniye cinsinden) \u00f6l\u00e7t\u00fc.<\/span><\/p>\n

Her hastan\u0131n \u00fc\u00e7 ilac\u0131n her birine verdi\u011fi yan\u0131t s\u00fcrelerini i\u00e7eren a\u015fa\u011f\u0131daki \u00fc\u00e7 tabloyu olu\u015fturabiliriz:<\/span><\/p>\n

 group1 = [4, 6, 3, 4, 3, 2, 2, 7, 6, 5]\ngroup2 = [5, 6, 8, 7, 7, 8, 4, 6, 4, 5]\ngroup3 = [2, 2, 5, 3, 2, 2, 1, 4, 3, 2]<\/strong><\/pre>\n
 Ad\u0131m 2: Friedman testini ger\u00e7ekle\u015ftirin<\/strong><\/h3>\n
 Daha sonra, scipy.stats k\u00fct\u00fcphanesindekiriedmanchisquare () fonksiyonunu<\/a> kullanarak Friedman testini ger\u00e7ekle\u015ftirece\u011fiz:<\/span><\/p>\n
 from<\/span> scipy import<\/span> stats\n\n#perform Friedman Test\n<\/span>stats. friedmanchisquare<\/span> (group1, group2, group3)\n\nFriedmanchisquareResult(statistic=13.3513513, pvalue=0.00126122012)<\/strong><\/pre>\n
 Friedman testi a\u015fa\u011f\u0131daki bo\u015f ve alternatif hipotezleri kullan\u0131r:<\/span><\/p>\n
 S\u0131f\u0131r hipotezi (H 0<\/sub> ):<\/strong> Her pop\u00fclasyonun ortalamas\u0131 e\u015fittir.<\/span><\/p>\n
 Alternatif hipotez: (Ha):<\/strong> En az bir pop\u00fclasyon ortalamas\u0131 di\u011ferlerinden farkl\u0131d\u0131r.<\/span><\/p>\n
 Bu \u00f6rnekte test istatisti\u011fi 13,35135’tir<\/strong> ve kar\u015f\u0131l\u0131k gelen p de\u011feri 0,00126’d\u0131r<\/strong> . Bu p de\u011feri 0,05’ten k\u00fc\u00e7\u00fck oldu\u011fundan, ortalama yan\u0131t s\u00fcresinin her \u00fc\u00e7 ila\u00e7 i\u00e7in de ayn\u0131 oldu\u011fu y\u00f6n\u00fcndeki s\u0131f\u0131r hipotezini reddedebiliriz.<\/span><\/p>\n
 Ba\u015fka bir deyi\u015fle, kullan\u0131lan ila\u00e7 t\u00fcr\u00fcn\u00fcn yan\u0131t s\u00fcresinde istatistiksel olarak anlaml\u0131 farkl\u0131l\u0131klara neden oldu\u011fu sonucuna varmak i\u00e7in yeterli kan\u0131t\u0131m\u0131z var.<\/span><\/p>\n
 3. Ad\u0131m: Nemenyi testini ger\u00e7ekle\u015ftirin<\/strong><\/span><\/h3>\n
 Daha sonra tam olarak hangi gruplar\u0131n farkl\u0131 ortalamalara sahip oldu\u011funu belirlemek i\u00e7in Nemenyi post-hoc testini uygulayabiliriz.<\/span><\/p>\n
 Bunu yapmak i\u00e7in scikit-posthocs k\u00fct\u00fcphanesini kurmam\u0131z gerekiyor:<\/span><\/p>\n
 pip<\/span> install scikit-posthocs\n<\/span><\/span><\/strong><\/pre>\n
 Daha sonra Nemenyi post-hoc testini ger\u00e7ekle\u015ftirmek i\u00e7in posthoc_nemenyi_friedman()<\/strong> fonksiyonunu kullanaca\u011f\u0131z:<\/span><\/p>\n
 import<\/span> scikit_posthocs as<\/span> sp\nimport<\/span> numpy as<\/span> np\n\n#combine three groups into one array\n<\/span>data = np. array<\/span> ([group1, group2, group3])\n\n#perform Nemenyi post-hoc test\n<\/span>sp. posthoc_nemenyi_friedman<\/span> ( data.T<\/span> )\n\n\t0 1 2\n0 1.000000 0.437407 0.065303\n1 0.437407 1.000000 0.001533\n2 0.065303 0.001533 1.000000\n<\/span><\/span><\/strong><\/pre>\n
 Not:<\/strong> Post-hoc testi do\u011fru bir \u015fekilde ger\u00e7ekle\u015ftirmek i\u00e7in numpy dizisini (data.T) transpoze etmemiz gerekiyordu.<\/span><\/p>\n
 Nemeyi’nin post-hoc testi, ortalamalar\u0131n her ikili kar\u015f\u0131la\u015ft\u0131rmas\u0131 i\u00e7in p de\u011ferlerini d\u00f6nd\u00fcr\u00fcr. Sonu\u00e7tan a\u015fa\u011f\u0131daki p de\u011ferlerini g\u00f6rebiliriz:<\/span><\/p>\n
    \n
  •  Grup 0’\u0131n grup 1’e k\u0131yasla p de\u011feri: 0,4374<\/strong><\/span><\/li>\n
  •  Grup 0’\u0131n grup 2’ye k\u0131yasla p de\u011feri: 0,0653<\/strong><\/span><\/li>\n
  •  Grup 1’in grup 2’ye g\u00f6re p de\u011feri: 0,0015<\/strong><\/span><\/li>\n<\/ul>\n
     \u03b1 = 0,05’te istatistiksel olarak anlaml\u0131 derecede farkl\u0131 ortalamalara sahip olan yaln\u0131zca iki grup Grup 1 ve Grup 2’dir.<\/span><\/p>\n
     Not:<\/strong> Nemenyi’nin testi, grup say\u0131s\u0131n\u0131 1, 2, 3’ten 0, 1, 2’ye d\u00f6n\u00fc\u015ft\u00fcrd\u00fc. Dolay\u0131s\u0131yla orijinal verilerdeki \u00f6nemli \u00f6l\u00e7\u00fcde farkl\u0131 olan gruplar, grup 2 ve 3’t\u00fcr.<\/span><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
    Friedman testi, tekrarlanan ANOVA \u00f6l\u00e7\u00fcmlerine parametrik olmayan bir alternatiftir. Her grupta ayn\u0131 deneklerin yer ald\u0131\u011f\u0131 \u00fc\u00e7 veya daha fazla grubun ortalamalar\u0131 aras\u0131nda istatistiksel olarak anlaml\u0131 bir fark olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in kullan\u0131l\u0131r. Friedman testinden elde edilen p de\u011feri istatistiksel olarak anlaml\u0131ysa, hangi gruplar\u0131n farkl\u0131 oldu\u011funu tam olarak belirlemek i\u00e7in Nemenyi post-hoc testini uygulayabiliriz. A\u015fa\u011f\u0131daki ad\u0131m […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1597","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\nPython'da Nemenyi Post-Hoc Testi Nas\u0131l Ger\u00e7ekle\u015ftirilir<\/title>\n<meta name=\"description\" content=\"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere Python'da Nemenyi post-hoc testinin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fi a\u00e7\u0131klanmaktad\u0131r.\" \/>\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\/tr\/nemenyi-piton-testi\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python'da Nemenyi Post-Hoc Testi Nas\u0131l Ger\u00e7ekle\u015ftirilir\" \/>\n<meta property=\"og:description\" content=\"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere Python'da Nemenyi post-hoc testinin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fi a\u00e7\u0131klanmaktad\u0131r.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/tr\/nemenyi-piton-testi\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T17:34:04+00:00\" \/>\n<meta name=\"author\" content=\"Dr.benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr.benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/tr\/nemenyi-piton-testi\/\",\"url\":\"https:\/\/statorials.org\/tr\/nemenyi-piton-testi\/\",\"name\":\"Python'da Nemenyi Post-Hoc Testi Nas\u0131l Ger\u00e7ekle\u015ftirilir\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/tr\/#website\"},\"datePublished\":\"2023-07-25T17:34:04+00:00\",\"dateModified\":\"2023-07-25T17:34:04+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/tr\/#\/schema\/person\/365dc158a39a7c8ae256355451e3de48\"},\"description\":\"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere Python'da Nemenyi post-hoc testinin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fi a\u00e7\u0131klanmaktad\u0131r.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/tr\/nemenyi-piton-testi\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/tr\/nemenyi-piton-testi\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/tr\/nemenyi-piton-testi\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Ev\",\"item\":\"https:\/\/statorials.org\/tr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Python'da nemenyi post-hoc testi nas\u0131l ger\u00e7ekle\u015ftirilir\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/tr\/#website\",\"url\":\"https:\/\/statorials.org\/tr\/\",\"name\":\"Statorials\",\"description\":\"\u0130statistik okuryazarl\u0131\u011f\u0131 rehberiniz!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/tr\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"tr\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/tr\/#\/schema\/person\/365dc158a39a7c8ae256355451e3de48\",\"name\":\"Dr.benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\/\/statorials.org\/tr\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/tr\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/tr\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr.benjamin anderson\"},\"description\":\"Merhaba, ben Benjamin, emekli bir istatistik profes\u00f6r\u00fc ve Statorials \u00f6\u011fretmenine d\u00f6n\u00fc\u015ft\u00fcm. \u0130statistik alan\u0131ndaki kapsaml\u0131 deneyimim ve uzmanl\u0131\u011f\u0131mla, \u00f6\u011frencilerimi Statorials arac\u0131l\u0131\u011f\u0131yla g\u00fc\u00e7lendirmek i\u00e7in bilgilerimi payla\u015fmaya can at\u0131yorum. 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