{"id":4531,"date":"2023-07-10T08:48:20","date_gmt":"2023-07-10T08:48:20","guid":{"rendered":"https:\/\/statorials.org\/tr\/hava-kilidinde-f-testi\/"},"modified":"2023-07-10T08:48:20","modified_gmt":"2023-07-10T08:48:20","slug":"hava-kilidinde-f-testi","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/hava-kilidinde-f-testi\/","title":{"rendered":"Sas&#39;ta f testi nas\u0131l yap\u0131l\u0131r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u0130ki pop\u00fclasyon varyans\u0131n\u0131n e\u015fit olup olmad\u0131\u011f\u0131n\u0131 test etmek i\u00e7in <strong>F testi<\/strong> kullan\u0131l\u0131r.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Testin s\u0131f\u0131r ve alternatif <a href=\"https:\/\/statorials.org\/tr\/hipotez-testi-1\/\" target=\"_blank\" rel=\"noopener\">hipotezleri<\/a> a\u015fa\u011f\u0131daki gibidir:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>H <sub>0<\/sub> :<\/strong> \u03c3 <sub>1<\/sub> <sup>2<\/sup> = \u03c3 <sub>2<\/sub> <sup>2<\/sup> (n\u00fcfus varyanslar\u0131 e\u015fittir)<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>H <sub>A<\/sub> :<\/strong> \u03c3 <sub>1<\/sub> <sup>2<\/sup> \u2260 \u03c3 <sub>2<\/sub> <sup>2<\/sup> (n\u00fcfus varyanslar\u0131 e\u015fit <em>de\u011fildir<\/em> )<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">F testi genellikle a\u015fa\u011f\u0131daki sorulardan birini yan\u0131tlamak i\u00e7in kullan\u0131l\u0131r:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1.<\/strong> \u0130ki \u00f6rnek varyanslar\u0131 e\u015fit olan pop\u00fclasyonlardan m\u0131 geliyor?<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2. Yeni bir i\u015flem veya s\u00fcre\u00e7 mevcut bir i\u015flem veya i\u015flemin de\u011fi\u015fkenli\u011fini azalt\u0131r m\u0131<\/strong> ?<\/span><\/p>\n<p> <span style=\"color: #000000;\">SAS&#8217;ta F testi ger\u00e7ekle\u015ftirmenin en kolay yolu, t testlerini ger\u00e7ekle\u015ftirmek i\u00e7in kullan\u0131lan ancak ayn\u0131 zamanda varsay\u0131lan olarak F testi de ger\u00e7ekle\u015ftiren <strong>PROC TTEST<\/strong> ifadesini kullanmakt\u0131r.<\/span><\/p>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki \u00f6rnek, pratikte SAS&#8217;ta F testinin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fini g\u00f6sterir.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\u00d6rnek: SAS&#8217;ta F-Testi<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">SAS&#8217;ta, farkl\u0131 basketbol oyuncular\u0131n\u0131n iki farkl\u0131 tak\u0131mda att\u0131\u011f\u0131 puanlar hakk\u0131nda bilgi i\u00e7eren a\u015fa\u011f\u0131daki veri setine sahip oldu\u011fumuzu varsayal\u0131m:<\/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> my_data;\n    <span style=\"color: #3366ff;\">input<\/span> team $points;\n    <span style=\"color: #3366ff;\">datalines<\/span> ;\nAt 18\nAt 19\nAt 22\nAt 25\nAt 27\nAt 28\nAt 41\nAt 45\nAt 51\nAt 55\nB14\nB15\nB15\nB17\nB 18\nB22\nB25\nB25\nB27\nB 34\n;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view dataset*\/\n<\/span><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data; \n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35389 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/fete1.png\" alt=\"\" width=\"173\" height=\"504\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Diyelim ki iki tak\u0131m aras\u0131nda puan fark\u0131n\u0131n e\u015fit olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in bir F testi yapmak istiyoruz.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Bunu yapmak i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini kullanabiliriz:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*perform F-test for equal variances*\/\n<\/span><span style=\"color: #800080;\">proc ttest<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data;\n    <span style=\"color: #3366ff;\">classteam<\/span> ;\n    <span style=\"color: #3366ff;\">var<\/span> points;\n<span style=\"color: #800080;\">run<\/span> ;<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35390 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/fete2.png\" alt=\"\" width=\"480\" height=\"469\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><strong>Varyanslar\u0131n E\u015fitli\u011fi<\/strong> ba\u015fl\u0131kl\u0131 son sonu\u00e7 tablosu F testinin sonu\u00e7lar\u0131n\u0131 i\u00e7ermektedir.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Bu tablodan \u015funlar\u0131 g\u00f6rebiliriz:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">F testi istatisti\u011fi <strong>4,39&#8217;dur<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kar\u015f\u0131l\u0131k gelen p de\u011feri <strong>0,0383&#8217;t\u00fcr<\/strong> .<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Bu p de\u011feri 0,05&#8217;ten k\u00fc\u00e7\u00fck oldu\u011fundan F testinin s\u0131f\u0131r hipotezini reddediyoruz.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Bu, iki tak\u0131m\u0131n ald\u0131\u011f\u0131 puanlar aras\u0131ndaki fark\u0131n e\u015fit <em>olmad\u0131\u011f\u0131n\u0131<\/em> s\u00f6yleyecek yeterli kan\u0131t\u0131m\u0131z oldu\u011fu anlam\u0131na geliyor.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Not<\/strong> : \u0130ki tak\u0131m aras\u0131nda ortalama puan de\u011ferlerinin e\u015fit olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in iki \u00f6rnekli bir t testi yap\u0131yorsan\u0131z, \u00e7\u0131kt\u0131da <strong>Satterthwaite<\/strong> adl\u0131 sat\u0131r i\u00e7in p de\u011ferini kullanacaks\u0131n\u0131z \u00e7\u00fcnk\u00fc pop\u00fclasyonun varyanslar\u0131 e\u015fittir. iki grup aras\u0131nda.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Ek kaynaklar<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki e\u011fitimlerde SAS&#8217;ta di\u011fer ortak g\u00f6revlerin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fi a\u00e7\u0131klanmaktad\u0131r:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/tr\/hava-kilidinde-bir-test-ornegi\/\" target=\"_blank\" rel=\"noopener\">SAS&#8217;ta tek \u00f6rnekli t testi nas\u0131l yap\u0131l\u0131r?<\/a><br \/> SAS&#8217;ta iki \u00f6rnekli t testi nas\u0131l yap\u0131l\u0131r?<br \/> <a href=\"https:\/\/statorials.org\/tr\/sasta-eslestirilmis-t-testi\/\" target=\"_blank\" rel=\"noopener\">SAS&#8217;ta e\u015fle\u015ftirilmi\u015f \u00f6rnekler t testi nas\u0131l ger\u00e7ekle\u015ftirilir?<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0130ki pop\u00fclasyon varyans\u0131n\u0131n e\u015fit olup olmad\u0131\u011f\u0131n\u0131 test etmek i\u00e7in F testi kullan\u0131l\u0131r. Testin s\u0131f\u0131r ve alternatif hipotezleri a\u015fa\u011f\u0131daki gibidir: H 0 : \u03c3 1 2 = \u03c3 2 2 (n\u00fcfus varyanslar\u0131 e\u015fittir) H A : \u03c3 1 2 \u2260 \u03c3 2 2 (n\u00fcfus varyanslar\u0131 e\u015fit de\u011fildir ) F testi genellikle a\u015fa\u011f\u0131daki sorulardan birini yan\u0131tlamak i\u00e7in [&hellip;]<\/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-4531","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SAS \u2013 Statorialsde F Testi Nas\u0131l Yap\u0131l\u0131r?<\/title>\n<meta name=\"description\" content=\"Bu e\u011fitimde, SAS&#039;ta e\u015fit varyanslar i\u00e7in F testinin nas\u0131l 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