{"id":500,"date":"2023-07-29T17:08:36","date_gmt":"2023-07-29T17:08:36","guid":{"rendered":"https:\/\/statorials.org\/tr\/gizli-degiskenler\/"},"modified":"2023-07-29T17:08:36","modified_gmt":"2023-07-29T17:08:36","slug":"gizli-degiskenler","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/gizli-degiskenler\/","title":{"rendered":"Gizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler"},"content":{"rendered":"

<\/p>\n

\n

Gizli de\u011fi\u015fken,<\/strong> istatistiksel analize dahil edilmeyen ancak analizde iki de\u011fi\u015fken aras\u0131ndaki ili\u015fkiyi etkileyen bir de\u011fi\u015fkendir.<\/span><\/p>\n

Gizli bir de\u011fi\u015fken, de\u011fi\u015fkenler aras\u0131ndaki ger\u00e7ek ili\u015fkiyi gizleyebilir veya yanl\u0131\u015f bir \u015fekilde de\u011fi\u015fkenler aras\u0131nda bir ili\u015fkinin mevcut oldu\u011fu izlenimini verebilir. Asl\u0131nda gizli de\u011fi\u015fkenler bir \u00e7al\u0131\u015fman\u0131n sonu\u00e7lar\u0131n\u0131 yan\u0131lt\u0131c\u0131 hale getirebilir.<\/span><\/p>\n

G\u00f6zlemsel \u00e7al\u0131\u015fmalarda gizli de\u011fi\u015fkenlerin veriler ve de\u011fi\u015fkenler aras\u0131ndaki ili\u015fkiler konusunda ola\u011fand\u0131\u015f\u0131 yorumlara yol a\u00e7abilece\u011finin fark\u0131nda olmak \u00f6nemlidir. Deneysel \u00e7al\u0131\u015fmalarda deneyin gizli de\u011fi\u015fken riskini (m\u00fcmk\u00fcn oldu\u011funca) ortadan kald\u0131racak \u015fekilde tasarlanmas\u0131 \u00f6nemlidir.<\/span><\/p>\n

Gizli de\u011fi\u015fken \u00f6rnekleri<\/span><\/strong><\/h2>\n

A\u015fa\u011f\u0131daki \u00f6rnekler, bir \u00e7al\u0131\u015fmada gizli de\u011fi\u015fkenlerin bulunabilece\u011fi \u00e7e\u015fitli durumlar\u0131 g\u00f6stermektedir:<\/span><\/p>\n

\u00f6rnek 1<\/strong><\/span><\/h3>\n

Ara\u015ft\u0131rmac\u0131, dondurma sat\u0131\u015flar\u0131 ile k\u00f6pekbal\u0131\u011f\u0131 sald\u0131r\u0131lar\u0131 aras\u0131nda g\u00fc\u00e7l\u00fc bir pozitif korelasyon bulundu\u011funu tespit etti. Bu, artan dondurma sat\u0131\u015flar\u0131n\u0131n daha fazla k\u00f6pekbal\u0131\u011f\u0131 sald\u0131r\u0131s\u0131na neden oldu\u011fu anlam\u0131na m\u0131 geliyor?<\/span><\/p>\n

Olas\u0131 de\u011fil. En olas\u0131 neden gizlenen de\u011fi\u015fken hava ko\u015fullar\u0131d\u0131r<\/em> . D\u0131\u015far\u0131s\u0131 s\u0131cak oldu\u011funda daha \u00e7ok insan dondurma al\u0131r ve daha \u00e7ok insan okyanusa gider.<\/span><\/p>\n

\u00d6rnek 2<\/strong><\/span><\/h3>\n

Bir ara\u015ft\u0131rmac\u0131, patlam\u0131\u015f m\u0131s\u0131r t\u00fcketimi ile y\u0131llar i\u00e7indeki trafik kazalar\u0131n\u0131n say\u0131s\u0131n\u0131n g\u00fc\u00e7l\u00fc bir \u015fekilde ili\u015fkili oldu\u011funu ke\u015ffeder. Bu, daha fazla patlam\u0131\u015f m\u0131s\u0131r t\u00fcketiminin daha fazla trafik kazas\u0131na neden oldu\u011fu anlam\u0131na m\u0131 geliyor?<\/span><\/p>\n

Olas\u0131 de\u011fil. Bunun en olas\u0131 nedeni de\u011fi\u015fken gizlenen pop\u00fclasyondur<\/em> . N\u00fcfus artt\u0131k\u00e7a t\u00fcketilen patlam\u0131\u015f m\u0131s\u0131r miktar\u0131 ve trafik kazalar\u0131n\u0131n say\u0131s\u0131 da art\u0131yor.<\/span><\/p>\n

\u00d6rnek 3<\/strong><\/span><\/h3>\n

Bir ara\u015ft\u0131rma, bir do\u011fal afetten sonra ne kadar \u00e7ok g\u00f6n\u00fcll\u00fc \u00f6ne \u00e7\u0131karsa, hasar\u0131n da o kadar b\u00fcy\u00fck oldu\u011funu ortaya koyuyor. Bu, g\u00f6n\u00fcll\u00fclerin daha fazla hasara neden oldu\u011fu anlam\u0131na m\u0131 geliyor?<\/span><\/p>\n

Olas\u0131 de\u011fil. Bunun en olas\u0131 nedeni, do\u011fal afetin de\u011fi\u015fen \u00f6l\u00e7e\u011fidir<\/em> . Daha b\u00fcy\u00fck bir do\u011fal afet, daha fazla g\u00f6n\u00fcll\u00fcn\u00fcn ortaya \u00e7\u0131kmas\u0131na ve do\u011fal afetin yol a\u00e7t\u0131\u011f\u0131 hasar miktar\u0131n\u0131n artmas\u0131na neden olur.<\/span><\/p>\n

\u00d6rnek 4<\/strong><\/span><\/h3>\n

\u00c7al\u0131\u015fma, eldiven sat\u0131\u015flar\u0131 ile snowboard kazalar\u0131n\u0131n g\u00fc\u00e7l\u00fc bir \u015fekilde ili\u015fkili oldu\u011funu ortaya koyuyor. Bu, eldivenlerin daha fazla snowboard kazas\u0131na neden oldu\u011fu anlam\u0131na m\u0131 geliyor?<\/span><\/p>\n

Olas\u0131 de\u011fil. Bunun en olas\u0131 nedeni gizlenen de\u011fi\u015fken s\u0131cakl\u0131kt\u0131r<\/em> . S\u0131cakl\u0131k d\u00fc\u015ft\u00fck\u00e7e giderek daha fazla insan eldiven al\u0131yor ve giderek daha fazla insan snowboard yapmaya gidiyor.<\/span><\/p>\n

Gizli de\u011fi\u015fkenler nas\u0131l belirlenir<\/strong><\/span><\/h2>\n

Gizli de\u011fi\u015fkenleri ortaya \u00e7\u0131karmak i\u00e7in \u00e7al\u0131\u015f\u0131lan alanda uzmanl\u0131\u011fa sahip olmak yard\u0131mc\u0131 olur. \u00c7al\u0131\u015fmaya a\u00e7\u0131k\u00e7a dahil edilmeyen \u00e7al\u0131\u015fma de\u011fi\u015fkenleri aras\u0131ndaki ili\u015fkiyi hangi potansiyel de\u011fi\u015fkenlerin etkileyebilece\u011fini bilerek, potansiyel gizli de\u011fi\u015fkenleri ortaya \u00e7\u0131karabilirsiniz.<\/span><\/p>\n

Potansiyel gizli de\u011fi\u015fkenleri tan\u0131mlaman\u0131n bir ba\u015fka yolu da art\u0131k grafiklerini incelemektir. Art\u0131klarda bir e\u011filim (do\u011frusal veya do\u011frusal olmayan) varsa bu, \u00e7al\u0131\u015fmaya dahil edilmeyen gizli bir de\u011fi\u015fkenin \u00e7al\u0131\u015fma de\u011fi\u015fkenlerini bir \u015fekilde etkiledi\u011fi anlam\u0131na gelebilir.<\/span><\/p>\n

Gizli de\u011fi\u015fken riski nas\u0131l ortadan kald\u0131r\u0131l\u0131r<\/strong><\/span><\/h2>\n

G\u00f6zlemsel \u00e7al\u0131\u015fmalarda gizli de\u011fi\u015fken riskini ortadan kald\u0131rmak \u00e7ok zor olabilir. \u00c7o\u011fu durumda yapabilece\u011finiz en iyi \u015fey, \u00e7al\u0131\u015fmay\u0131 etkileyebilecek potansiyel gizli de\u011fi\u015fkenleri \u00f6nlemek yerine basit\u00e7e tan\u0131mlamakt\u0131r.<\/span><\/p>\n

Ancak deneysel \u00e7al\u0131\u015fmalarda gizli de\u011fi\u015fkenlerin etkisi iyi bir deney tasar\u0131m\u0131 ile b\u00fcy\u00fck \u00f6l\u00e7\u00fcde ortadan kald\u0131r\u0131labilmektedir.<\/span><\/p>\n

\u00d6rne\u011fin, iki hap\u0131n kan bas\u0131nc\u0131 \u00fczerinde farkl\u0131 bir etkisinin olup olmad\u0131\u011f\u0131n\u0131 bilmek istedi\u011fimizi varsayal\u0131m. Beslenme<\/em> ve sigara i\u00e7me al\u0131\u015fkanl\u0131klar\u0131<\/em> gibi gizli de\u011fi\u015fkenlerin de tansiyonu etkiledi\u011fini biliyoruz. Bu nedenle bu gizli de\u011fi\u015fkenleri rastgele bir tasar\u0131m<\/a> kullanarak kontrol etmeye \u00e7al\u0131\u015fabiliriz. Bu, hastalar\u0131 birinci veya ikinci hap\u0131 almalar\u0131 i\u00e7in rastgele atad\u0131\u011f\u0131m\u0131z anlam\u0131na gelir.<\/span><\/p>\n

Hastalar\u0131 rastgele gruplara atad\u0131\u011f\u0131m\u0131z i\u00e7in gizli de\u011fi\u015fkenlerin her iki grubu da yakla\u015f\u0131k olarak ayn\u0131 \u015fekilde etkileyece\u011fini varsayabiliriz. Bu, kan bas\u0131nc\u0131ndaki herhangi bir farkl\u0131l\u0131\u011f\u0131n gizli bir de\u011fi\u015fkenin etkisinden ziyade hapla ili\u015fkilendirilebilece\u011fi anlam\u0131na gelir.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Gizli de\u011fi\u015fken, istatistiksel analize dahil edilmeyen ancak analizde iki de\u011fi\u015fken aras\u0131ndaki ili\u015fkiyi etkileyen bir de\u011fi\u015fkendir. Gizli bir de\u011fi\u015fken, de\u011fi\u015fkenler aras\u0131ndaki ger\u00e7ek ili\u015fkiyi gizleyebilir veya yanl\u0131\u015f bir \u015fekilde de\u011fi\u015fkenler aras\u0131nda bir ili\u015fkinin mevcut oldu\u011fu izlenimini verebilir. Asl\u0131nda gizli de\u011fi\u015fkenler bir \u00e7al\u0131\u015fman\u0131n sonu\u00e7lar\u0131n\u0131 yan\u0131lt\u0131c\u0131 hale getirebilir. G\u00f6zlemsel \u00e7al\u0131\u015fmalarda gizli de\u011fi\u015fkenlerin veriler ve de\u011fi\u015fkenler aras\u0131ndaki ili\u015fkiler konusunda ola\u011fand\u0131\u015f\u0131 […]<\/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-500","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\nGizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler - Statorials<\/title>\n<meta name=\"description\" content=\"Bu e\u011fitimde, \u00e7e\u015fitli \u00f6rneklerle birlikte gizli de\u011fi\u015fkenlerin basit bir a\u00e7\u0131klamas\u0131 sunulmaktad\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\/gizli-degiskenler\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler - Statorials\" \/>\n<meta property=\"og:description\" content=\"Bu e\u011fitimde, \u00e7e\u015fitli \u00f6rneklerle birlikte gizli de\u011fi\u015fkenlerin basit bir a\u00e7\u0131klamas\u0131 sunulmaktad\u0131r.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/tr\/gizli-degiskenler\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-29T17:08:36+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=\"4 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/tr\/gizli-degiskenler\/\",\"url\":\"https:\/\/statorials.org\/tr\/gizli-degiskenler\/\",\"name\":\"Gizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/tr\/#website\"},\"datePublished\":\"2023-07-29T17:08:36+00:00\",\"dateModified\":\"2023-07-29T17:08:36+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/tr\/#\/schema\/person\/365dc158a39a7c8ae256355451e3de48\"},\"description\":\"Bu e\u011fitimde, \u00e7e\u015fitli \u00f6rneklerle birlikte gizli de\u011fi\u015fkenlerin basit bir a\u00e7\u0131klamas\u0131 sunulmaktad\u0131r.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/tr\/gizli-degiskenler\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/tr\/gizli-degiskenler\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/tr\/gizli-degiskenler\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Ev\",\"item\":\"https:\/\/statorials.org\/tr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Gizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler\"}]},{\"@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. Daha fazlas\u0131n\u0131 bil\",\"sameAs\":[\"https:\/\/statorials.org\/tr\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Gizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler - Statorials","description":"Bu e\u011fitimde, \u00e7e\u015fitli \u00f6rneklerle birlikte gizli de\u011fi\u015fkenlerin basit bir a\u00e7\u0131klamas\u0131 sunulmaktad\u0131r.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/tr\/gizli-degiskenler\/","og_locale":"tr_TR","og_type":"article","og_title":"Gizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler - Statorials","og_description":"Bu e\u011fitimde, \u00e7e\u015fitli \u00f6rneklerle birlikte gizli de\u011fi\u015fkenlerin basit bir a\u00e7\u0131klamas\u0131 sunulmaktad\u0131r.","og_url":"https:\/\/statorials.org\/tr\/gizli-degiskenler\/","og_site_name":"Statorials","article_published_time":"2023-07-29T17:08:36+00:00","author":"Dr.benjamin anderson","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"Dr.benjamin anderson","Tahmini okuma s\u00fcresi":"4 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/tr\/gizli-degiskenler\/","url":"https:\/\/statorials.org\/tr\/gizli-degiskenler\/","name":"Gizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler - Statorials","isPartOf":{"@id":"https:\/\/statorials.org\/tr\/#website"},"datePublished":"2023-07-29T17:08:36+00:00","dateModified":"2023-07-29T17:08:36+00:00","author":{"@id":"https:\/\/statorials.org\/tr\/#\/schema\/person\/365dc158a39a7c8ae256355451e3de48"},"description":"Bu e\u011fitimde, \u00e7e\u015fitli \u00f6rneklerle birlikte gizli de\u011fi\u015fkenlerin basit bir a\u00e7\u0131klamas\u0131 sunulmaktad\u0131r.","breadcrumb":{"@id":"https:\/\/statorials.org\/tr\/gizli-degiskenler\/#breadcrumb"},"inLanguage":"tr","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/tr\/gizli-degiskenler\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/tr\/gizli-degiskenler\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Ev","item":"https:\/\/statorials.org\/tr\/"},{"@type":"ListItem","position":2,"name":"Gizli de\u011fi\u015fkenler: tan\u0131m ve \u00f6rnekler"}]},{"@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. Daha fazlas\u0131n\u0131 bil","sameAs":["https:\/\/statorials.org\/tr"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/posts\/500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/comments?post=500"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/posts\/500\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/media?parent=500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/categories?post=500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/tags?post=500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}