{"id":1007601,"date":"2023-12-21T11:00:00","date_gmt":"2023-12-21T18:00:00","guid":{"rendered":"https:\/\/www.questionpro.com\/blog\/t-testi-nedir-avantajlari-uygulama-adimlari\/"},"modified":"2025-02-13T00:18:27","modified_gmt":"2025-02-13T07:18:27","slug":"t-testi-nedir-avantajlari-uygulama-adimlari","status":"publish","type":"post","link":"https:\/\/www.questionpro.com\/blog\/tr\/t-testi-nedir-avantajlari-uygulama-adimlari\/","title":{"rendered":"T-Testi: Nedir, Avantajlar\u0131 + Uygulama Ad\u0131mlar\u0131"},"content":{"rendered":"\n

\u0130statistiksel analizleri kullanmak, ara\u015ft\u0131rma verilerini anlamland\u0131rmak i\u00e7in \u00e7ok \u00f6nemlidir ve t-testi bu s\u00fcre\u00e7te \u00f6nemli bir ara\u00e7t\u0131r. Test, farkl\u0131 \u00f6\u011fretim y\u00f6ntemlerinin \u00f6\u011frenci performans\u0131n\u0131 nas\u0131l etkiledi\u011fini inceleyen veya yeni bir t\u0131bbi tedavinin etkinli\u011fini de\u011ferlendiren ara\u015ft\u0131rmac\u0131lar\u0131n gruplar aras\u0131ndaki \u00f6nemli farkl\u0131l\u0131klar\u0131 bulmalar\u0131na yard\u0131mc\u0131 olur. <\/p>\n\n

Bu istatistiksel testin iki \u015fekli vard\u0131r: ba\u011f\u0131ms\u0131z ve e\u015fle\u015ftirilmi\u015f. Ortalamalardaki farkl\u0131l\u0131klar\u0131n ger\u00e7ek etkilerden mi yoksa sadece rastgele \u015fanstan m\u0131 kaynakland\u0131\u011f\u0131n\u0131 belirlemeye yard\u0131mc\u0131 olur. \u0130ngiliz istatistik\u00e7i William Sealy Gosset bu testi 1908 y\u0131l\u0131nda Guinness Bira Fabrikas\u0131’nda \u00e7al\u0131\u015f\u0131rken geli\u015ftirmi\u015ftir. Bira \u00fcretiminden elde edilen k\u00fc\u00e7\u00fck veri \u00f6rneklerini analiz etmek i\u00e7in bir yola ihtiyac\u0131 vard\u0131. <\/p>\n\n

G\u00fcn\u00fcm\u00fczde, Student’s t-test olarak da adland\u0131r\u0131lan t-testi, bilimsel ara\u015ft\u0131rmalarda ve pazar ara\u015ft\u0131rmalar\u0131nda yayg\u0131n olarak kullan\u0131lmaktad\u0131r.<\/p>\n\n

Bu makalede, t-testinin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, farkl\u0131 uygulamalar\u0131n\u0131 ve pratikte nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 \u00f6\u011frenece\u011fiz.<\/p>\n\n

T-testi nedir?<\/h2>\n\n

t-testi, iki veri k\u00fcmesinin ortalamas\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131rarak belirgin \u015fekilde farkl\u0131 olup olmad\u0131klar\u0131n\u0131 g\u00f6rmenize yard\u0131mc\u0131 olan istatistiksel bir testtir.<\/p>\n\n

\u0130ki grup \u00f6\u011frenciniz oldu\u011funu d\u00fc\u015f\u00fcn\u00fcn: bir grup matematik dersi ald\u0131, di\u011fer grup almad\u0131. Matematik dersi alan grubun almayan gruba g\u00f6re bir matematik testinde \u00f6nemli \u00f6l\u00e7\u00fcde daha y\u00fcksek puan al\u0131p almad\u0131\u011f\u0131n\u0131 bulmak i\u00e7in t-testini kullanabilirsiniz. <\/p>\n\n

t-testini kulland\u0131\u011f\u0131n\u0131zda, iki grubun ortalamalar\u0131 aras\u0131ndaki fark\u0131n \u00f6nemli olup olmad\u0131\u011f\u0131n\u0131 g\u00f6steren bir “t de\u011feri” elde edersiniz.<\/p>\n\n

T-testinin ana kullan\u0131m alanlar\u0131 nelerdir?<\/h2>\n\n

Bu test t\u0131bbi ara\u015ft\u0131rma, psikoloji, ekonomi ve e\u011fitim gibi bir\u00e7ok alanda kullan\u0131lmaktad\u0131r. \u0130\u015fte t-testinin ba\u015fl\u0131ca kullan\u0131m alanlar\u0131ndan baz\u0131lar\u0131: <\/p>\n\n