{"id":29079,"date":"2023-08-18T06:23:21","date_gmt":"2023-08-18T09:23:21","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/construct-in-research-copy\/"},"modified":"2024-12-05T15:47:43","modified_gmt":"2024-12-05T18:47:43","slug":"hypothesis-testing","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/tr\/hipotez-testleri\/","title":{"rendered":"Hipotez Testi: \u0130lkeler ve Y\u00f6ntemler"},"content":{"rendered":"

Hipotez testi, bilimsel ara\u015ft\u0131rmalarda \u00f6rnek verilere dayal\u0131 olarak pop\u00fclasyon parametreleri hakk\u0131ndaki hipotezleri do\u011frulamak veya reddetmek i\u00e7in kullan\u0131lan temel bir ara\u00e7t\u0131r. Bir hipotezin istatistiksel \u00f6nemini de\u011ferlendirmek ve bir pop\u00fclasyonun ger\u00e7ek do\u011fas\u0131 hakk\u0131nda sonu\u00e7lar \u00e7\u0131karmak i\u00e7in yap\u0131land\u0131r\u0131lm\u0131\u015f bir \u00e7er\u00e7eve sa\u011flar. Hipotez testi a\u015fa\u011f\u0131daki gibi alanlarda yayg\u0131n olarak kullan\u0131lmaktad\u0131r biyoloji, psikoloji, ekonomi ve m\u00fchendislik<\/strong> Yeni tedavilerin etkinli\u011fini belirlemek, de\u011fi\u015fkenler aras\u0131ndaki ili\u015fkileri ke\u015ffetmek ve veriye dayal\u0131 kararlar almak i\u00e7in. Ancak, \u00f6nemine ra\u011fmen, hipotez testi do\u011fru anla\u015f\u0131lmas\u0131 ve uygulanmas\u0131 zor bir konu olabilir.<\/p>\n\n\n\n

Bu makalede, amac\u0131, test t\u00fcrleri, ilgili ad\u0131mlar, yayg\u0131n hatalar ve en iyi uygulamalar dahil olmak \u00fczere hipotez testine giri\u015f yapaca\u011f\u0131z. \u0130ster yeni ba\u015flayan ister deneyimli bir ara\u015ft\u0131rmac\u0131 olun, bu makale \u00e7al\u0131\u015fmalar\u0131n\u0131zda hipotez testlerinde ustala\u015fman\u0131z i\u00e7in de\u011ferli bir rehber g\u00f6revi g\u00f6recektir.<\/p>\n\n\n\n

Hipotez Testine Giri\u015f<\/strong><\/h2>\n\n\n\n

Hipotez testi, bir hipotezi desteklemek veya reddetmek i\u00e7in yeterli kan\u0131t olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in ara\u015ft\u0131rmalarda yayg\u0131n olarak kullan\u0131lan istatistiksel bir ara\u00e7t\u0131r. Bir pop\u00fclasyon parametresi hakk\u0131nda bir hipotez form\u00fcle etmeyi, veri toplamay\u0131 ve hipotezin do\u011fru olma olas\u0131l\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in verileri analiz etmeyi i\u00e7erir. Bilimsel y\u00f6ntemin kritik bir bile\u015fenidir ve \u00e7ok \u00e7e\u015fitli alanlarda kullan\u0131l\u0131r.<\/p>\n\n\n\n

Hipotez testi s\u00fcreci tipik olarak iki hipotez i\u00e7erir: bo\u015f hipotez ve alternatif hipotez. S\u0131f\u0131r hipotezi, iki de\u011fi\u015fken aras\u0131nda anlaml\u0131 bir fark veya aralar\u0131nda bir ili\u015fki olmad\u0131\u011f\u0131na dair bir ifadeyken, alternatif hipotez bir ili\u015fki veya fark\u0131n varl\u0131\u011f\u0131n\u0131 \u00f6ne s\u00fcrer. Ara\u015ft\u0131rmac\u0131lar bo\u015f hipotezin alternatif hipotez lehine reddedilip reddedilemeyece\u011fini belirlemek i\u00e7in veri toplar ve istatistiksel analiz yapar.<\/p>\n\n\n\n

Hipotez testi, verilere dayal\u0131 kararlar almak i\u00e7in kullan\u0131l\u0131r ve s\u00fcrecin alt\u0131nda yatan varsay\u0131mlar\u0131 ve s\u0131n\u0131rlamalar\u0131 anlamak \u00f6nemlidir. Sonu\u00e7lar\u0131n do\u011fru ve g\u00fcvenilir olmas\u0131n\u0131 sa\u011flamak i\u00e7in uygun istatistiksel testleri ve \u00f6rneklem b\u00fcy\u00fckl\u00fcklerini se\u00e7mek \u00e7ok \u00f6nemlidir ve ara\u015ft\u0131rmac\u0131lar\u0131n teorilerini do\u011frulamalar\u0131 ve kan\u0131ta dayal\u0131 kararlar almalar\u0131 i\u00e7in g\u00fc\u00e7l\u00fc bir ara\u00e7 olabilir.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Hipotez Testlerinin T\u00fcrleri<\/strong><\/h2>\n\n\n\n

Hipotez testleri genel olarak iki kategoride s\u0131n\u0131fland\u0131r\u0131labilir: tek \u00f6rneklemli hipotez testleri ve iki \u00f6rneklemli hipotez testleri. \u015eimdi bu kategorilerin her birine daha yak\u0131ndan bakal\u0131m:<\/p>\n\n\n\n

Tek \u00d6rnek Hipotez Testleri<\/strong><\/h3>\n\n\n\n

Tek \u00f6rneklemli bir hipotez testinde, ara\u015ft\u0131rmac\u0131 tek bir pop\u00fclasyondan veri toplar ve bunlar\u0131 bilinen bir de\u011fer veya hipotezle kar\u015f\u0131la\u015ft\u0131r\u0131r. Bo\u015f hipotez genellikle pop\u00fclasyon ortalamalar\u0131 ile bilinen de\u011fer veya hipotezlenen de\u011fer aras\u0131nda anlaml\u0131 bir fark olmad\u0131\u011f\u0131n\u0131 varsayar. Ara\u015ft\u0131rmac\u0131 daha sonra g\u00f6zlemlenen fark\u0131n istatistiksel olarak anlaml\u0131 olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in istatistiksel bir test ger\u00e7ekle\u015ftirir. Tek \u00f6rneklem hipotez testlerinin baz\u0131 \u00f6rnekleri \u015funlard\u0131r:<\/p>\n\n\n\n

Tek \u00d6rneklem t-testi:<\/strong> Bu test, \u00f6rnek ortalamas\u0131n\u0131n pop\u00fclasyonun varsay\u0131lan ortalamas\u0131ndan \u00f6nemli \u00f6l\u00e7\u00fcde farkl\u0131 olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n\n\n

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Via statstest.b-cdn.net<\/a><\/em><\/figcaption><\/figure>\n\n\n\n
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Tek \u00d6rneklem z-testi:<\/strong> Bu test, pop\u00fclasyon standart sapmas\u0131 bilindi\u011finde \u00f6rnek ortalamas\u0131n\u0131n pop\u00fclasyonun varsay\u0131lan ortalamas\u0131ndan \u00f6nemli \u00f6l\u00e7\u00fcde farkl\u0131 olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n\n\n

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Via statstest.b-cdn.net<\/a><\/em><\/figcaption><\/figure>\n\n\n\n
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\u0130ki \u00d6rnek Hipotez Testi<\/strong><\/h3>\n\n\n\n

\u0130ki \u00f6rneklemli bir hipotez testinde ara\u015ft\u0131rmac\u0131 iki farkl\u0131 pop\u00fclasyondan veri toplar ve bunlar\u0131 birbirleriyle kar\u015f\u0131la\u015ft\u0131r\u0131r. Bo\u015f hipotez tipik olarak iki pop\u00fclasyon aras\u0131nda anlaml\u0131 bir fark olmad\u0131\u011f\u0131n\u0131 varsayar ve ara\u015ft\u0131rmac\u0131 g\u00f6zlemlenen fark\u0131n istatistiksel olarak anlaml\u0131 olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in istatistiksel bir test ger\u00e7ekle\u015ftirir. \u0130ki \u00f6rneklemli hipotez testlerinin baz\u0131 \u00f6rnekleri \u015funlard\u0131r:<\/p>\n\n\n\n

Ba\u011f\u0131ms\u0131z \u00d6rneklem t-testi:<\/strong> <\/em>Bu test, iki ba\u011f\u0131ms\u0131z \u00f6rneklemin ortalamalar\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131rarak birbirlerinden \u00f6nemli \u00f6l\u00e7\u00fcde farkl\u0131 olup olmad\u0131klar\u0131n\u0131 belirlemek i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n\n\n

<\/div>\n\n\n\n
\"\"
Via statstest.b-cdn.net<\/a><\/em><\/figcaption><\/figure>\n\n\n\n
<\/div>\n\n\n\n

E\u015fle\u015ftirilmi\u015f \u00d6rnekler t-testi: <\/strong>Bu test, ayn\u0131 denek grubunun \u00f6n test ve son test puanlar\u0131 gibi iki ilgili \u00f6rneklemin ortalamalar\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131rmak i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n\n\n

\u015eekil: <\/strong>https:\/\/statstest.b-cdn.net\/wp-content\/uploads\/2020\/10\/Paired-Samples-T-Test.jpg<\/p>\n\n\n\n

\u00d6zetle, tek \u00f6rneklemli hipotez testleri tek bir pop\u00fclasyon hakk\u0131ndaki hipotezleri test etmek i\u00e7in kullan\u0131l\u0131rken, iki \u00f6rneklemli hipotez testleri iki pop\u00fclasyonu kar\u015f\u0131la\u015ft\u0131rmak i\u00e7in kullan\u0131l\u0131r. Kullan\u0131lacak uygun test, verilerin niteli\u011fine ve ara\u015ft\u0131r\u0131lan ara\u015ft\u0131rma sorusuna ba\u011fl\u0131d\u0131r.<\/p>\n\n\n\n

Hipotez Testinin Ad\u0131mlar\u0131<\/strong><\/h2>\n\n\n\n

Hipotez testi, ara\u015ft\u0131rmac\u0131lar\u0131n bir hipotezi desteklemek veya reddetmek i\u00e7in yeterli kan\u0131t olup olmad\u0131\u011f\u0131n\u0131 belirlemelerine yard\u0131mc\u0131 olan bir dizi ad\u0131m\u0131 i\u00e7erir. Bu ad\u0131mlar genel olarak d\u00f6rt kategoride s\u0131n\u0131fland\u0131r\u0131labilir:<\/p>\n\n\n\n

Hipotezin Form\u00fcle Edilmesi<\/strong><\/h3>\n\n\n\n

Hipotez testinde ilk ad\u0131m s\u0131f\u0131r hipotezi ve alternatif hipotezi form\u00fcle etmektir. S\u0131f\u0131r hipotezi genellikle iki de\u011fi\u015fken aras\u0131nda anlaml\u0131 bir fark olmad\u0131\u011f\u0131n\u0131 varsayarken, alternatif hipotez bir ili\u015fki veya fark oldu\u011funu \u00f6ne s\u00fcrer. Veri toplamaya ba\u015flamadan \u00f6nce net ve test edilebilir hipotezler form\u00fcle etmek \u00f6nemlidir.<\/p>\n\n\n\n

Veri Toplama<\/strong><\/h3>\n\n\n\n

\u0130kinci ad\u0131m, hipotezleri test etmek i\u00e7in kullan\u0131labilecek ilgili verileri toplamakt\u0131r. Veri toplama s\u00fcreci, \u00f6rneklemin ilgili pop\u00fclasyonu temsil etmesini sa\u011flamak i\u00e7in dikkatlice tasarlanmal\u0131d\u0131r. \u00d6rneklem b\u00fcy\u00fckl\u00fc\u011f\u00fc istatistiksel olarak ge\u00e7erli sonu\u00e7lar \u00fcretecek kadar b\u00fcy\u00fck olmal\u0131d\u0131r.<\/p>\n\n\n\n

Veri Analizi<\/strong><\/h3>\n\n\n\n

\u00dc\u00e7\u00fcnc\u00fc ad\u0131m, uygun istatistiksel testleri kullanarak verileri analiz etmektir. Test se\u00e7imi, verilerin niteli\u011fine ve ara\u015ft\u0131r\u0131lan ara\u015ft\u0131rma sorusuna ba\u011fl\u0131d\u0131r. \u0130statistiksel analizin sonu\u00e7lar\u0131, bo\u015f hipotezin alternatif hipotez lehine reddedilip reddedilemeyece\u011fi hakk\u0131nda bilgi sa\u011flayacakt\u0131r.<\/p>\n\n\n\n

Sonu\u00e7lar\u0131n Yorumlanmas\u0131<\/strong><\/h3>\n\n\n\n

Son ad\u0131m, istatistiksel analizin sonu\u00e7lar\u0131n\u0131 yorumlamakt\u0131r. Ara\u015ft\u0131rmac\u0131n\u0131n sonu\u00e7lar\u0131n istatistiksel olarak anlaml\u0131 olup olmad\u0131\u011f\u0131n\u0131 ve hipotezi destekleyip desteklemedi\u011fini belirlemesi gerekir. Ara\u015ft\u0131rmac\u0131 ayr\u0131ca \u00e7al\u0131\u015fman\u0131n s\u0131n\u0131rlamalar\u0131n\u0131 ve sonu\u00e7lar\u0131n potansiyel etkilerini de g\u00f6z \u00f6n\u00fcnde bulundurmal\u0131d\u0131r.<\/p>\n\n\n\n

Hipotez Testlerinde S\u0131k Kar\u015f\u0131la\u015f\u0131lan Hatalar<\/strong><\/h2>\n\n\n\n

Hipotez testi, bir veri \u00f6rne\u011fine dayal\u0131 olarak bir pop\u00fclasyon parametresi hakk\u0131nda belirli bir hipotezi desteklemek veya reddetmek i\u00e7in yeterli kan\u0131t olup olmad\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in kullan\u0131lan istatistiksel bir y\u00f6ntemdir. Hipotez testinde ortaya \u00e7\u0131kabilecek iki hata t\u00fcr\u00fc \u015funlard\u0131r:<\/p>\n\n\n\n

Tip I hata: <\/strong>Bu durum, ara\u015ft\u0131rmac\u0131 do\u011fru olmas\u0131na ra\u011fmen s\u0131f\u0131r hipotezini reddetti\u011finde ortaya \u00e7\u0131kar. Tip I hata yanl\u0131\u015f pozitif olarak da bilinir.<\/p>\n\n\n\n

Tip II hata:<\/strong> <\/em>Bu durum, ara\u015ft\u0131rmac\u0131 yanl\u0131\u015f olmas\u0131na ra\u011fmen s\u0131f\u0131r hipotezini reddedemedi\u011finde ortaya \u00e7\u0131kar. Tip II hata yanl\u0131\u015f negatif olarak da bilinir.<\/p>\n\n\n\n

Bu hatalar\u0131 en aza indirmek i\u00e7in \u00e7al\u0131\u015fman\u0131n dikkatli bir \u015fekilde tasarlanmas\u0131 ve y\u00fcr\u00fct\u00fclmesi, uygun istatistiksel testlerin se\u00e7ilmesi ve sonu\u00e7lar\u0131n do\u011fru bir \u015fekilde yorumlanmas\u0131 \u00f6nemlidir. Ara\u015ft\u0131rmac\u0131lar ayr\u0131ca \u00e7al\u0131\u015fmalar\u0131n\u0131n s\u0131n\u0131rl\u0131l\u0131klar\u0131n\u0131 kabul etmeli ve sonu\u00e7 \u00e7\u0131kar\u0131rken potansiyel hata kaynaklar\u0131n\u0131 g\u00f6z \u00f6n\u00fcnde bulundurmal\u0131d\u0131r.<\/p>\n\n\n\n

Bo\u015f ve Alternatif Hipotezler<\/strong><\/h2>\n\n\n\n

Hipotez testinde iki t\u00fcr hipotez vard\u0131r: bo\u015f hipotez ve alternatif hipotez.<\/p>\n\n\n\n

Bo\u015f Hipotez<\/strong><\/h3>\n\n\n\n

S\u0131f\u0131r hipotezi (H0), iki de\u011fi\u015fken aras\u0131nda anlaml\u0131 bir fark veya ili\u015fki olmad\u0131\u011f\u0131n\u0131 varsayan bir ifadedir. Reddetmek i\u00e7in yeterli kan\u0131t bulunana kadar do\u011fru oldu\u011fu varsay\u0131lan varsay\u0131lan hipotezdir. S\u0131f\u0131r hipotezi genellikle \"A grubunun ortalamas\u0131 B grubunun ortalamas\u0131na e\u015fittir\" gibi bir e\u015fitlik ifadesi olarak yaz\u0131l\u0131r.<\/p>\n\n\n\n

Alternatif Hipotez<\/strong><\/h3>\n\n\n\n

Alternatif hipotez (Ha), iki de\u011fi\u015fken aras\u0131nda anlaml\u0131 bir fark veya ili\u015fki oldu\u011funu \u00f6ne s\u00fcren bir ifadedir. Ara\u015ft\u0131rmac\u0131n\u0131n test etmek istedi\u011fi hipotezdir. Alternatif hipotez genellikle \"A grubunun ortalamas\u0131 B grubunun ortalamas\u0131na e\u015fit de\u011fildir\" gibi bir e\u015fitsizlik ifadesi olarak yaz\u0131l\u0131r.<\/p>\n\n\n\n

S\u0131f\u0131r ve alternatif hipotezler birbirini tamamlar ve birbirini d\u0131\u015flar. E\u011fer s\u0131f\u0131r hipotezi reddedilirse, alternatif hipotez kabul edilir. E\u011fer s\u0131f\u0131r hipotezi reddedilemezse, alternatif hipotez desteklenmez.<\/p>\n\n\n\n

S\u0131f\u0131r hipotezinin mutlaka do\u011fru olmas\u0131 gerekmedi\u011fine dikkat etmek \u00f6nemlidir. Bu sadece, incelenen de\u011fi\u015fkenler aras\u0131nda anlaml\u0131 bir fark veya ili\u015fki olmad\u0131\u011f\u0131n\u0131 varsayan bir ifadedir. Hipotez testinin amac\u0131, alternatif hipotez lehine s\u0131f\u0131r hipotezini reddetmek i\u00e7in yeterli kan\u0131t olup olmad\u0131\u011f\u0131n\u0131 belirlemektir.<\/p>\n\n\n\n

Anlaml\u0131l\u0131k D\u00fczeyi ve P De\u011feri<\/strong><\/h2>\n\n\n\n

Hipotez testinde anlaml\u0131l\u0131k d\u00fczeyi (alfa), Tip I hata yapma olas\u0131l\u0131\u011f\u0131d\u0131r; bu da bo\u015f hipotezin ger\u00e7ekte do\u011fru oldu\u011fu halde reddedilmesi anlam\u0131na gelir. Bilimsel ara\u015ft\u0131rmalarda en yayg\u0131n kullan\u0131lan anlaml\u0131l\u0131k d\u00fczeyi 0,05'tir; bu da Tip I hata yapma olas\u0131l\u0131\u011f\u0131n\u0131n 5% oldu\u011fu anlam\u0131na gelir.<\/p>\n\n\n\n

p-de\u011feri, s\u0131f\u0131r hipotezinin do\u011fru olmas\u0131 halinde g\u00f6zlenen sonu\u00e7lar\u0131n veya daha u\u00e7 sonu\u00e7lar\u0131n elde edilme olas\u0131l\u0131\u011f\u0131n\u0131 g\u00f6steren istatistiksel bir \u00f6l\u00e7\u00fcd\u00fcr. S\u0131f\u0131r hipotezine kar\u015f\u0131 kan\u0131tlar\u0131n g\u00fcc\u00fcn\u00fcn bir \u00f6l\u00e7\u00fcs\u00fcd\u00fcr. K\u00fc\u00e7\u00fck bir p-de\u011feri (tipik olarak se\u00e7ilen anlaml\u0131l\u0131k d\u00fczeyi olan 0,05'ten k\u00fc\u00e7\u00fck) s\u0131f\u0131r hipotezine kar\u015f\u0131 g\u00fc\u00e7l\u00fc kan\u0131tlar oldu\u011funu g\u00f6sterirken, b\u00fcy\u00fck bir p-de\u011feri s\u0131f\u0131r hipotezini reddetmek i\u00e7in yeterli kan\u0131t olmad\u0131\u011f\u0131n\u0131 g\u00f6sterir.<\/p>\n\n\n\n

E\u011fer p-de\u011feri anlaml\u0131l\u0131k d\u00fczeyinden k\u00fc\u00e7\u00fckse (p alfa), s\u0131f\u0131r hipotezi reddedilmez ve alternatif hipotez desteklenmez.<\/p>\n\n\n\n

Anlaml\u0131l\u0131k d\u00fczeyinin kolay anla\u015f\u0131l\u0131r bir \u00f6zetini istiyorsan\u0131z, bu makalede bulabilirsiniz: Anlaml\u0131l\u0131k d\u00fczeyinin anla\u015f\u0131lmas\u0131 kolay bir \u00f6zeti<\/a>.<\/p>\n\n\n\n

\u0130statistiksel anlaml\u0131l\u0131\u011f\u0131n mutlaka pratik anlaml\u0131l\u0131k veya \u00f6nem anlam\u0131na gelmedi\u011fine dikkat etmek \u00f6nemlidir. De\u011fi\u015fkenler aras\u0131ndaki k\u00fc\u00e7\u00fck bir fark veya ili\u015fki istatistiksel olarak anlaml\u0131 olabilir ancak pratikte anlaml\u0131 olmayabilir. Ayr\u0131ca, istatistiksel anlaml\u0131l\u0131k di\u011fer fakt\u00f6rlerin yan\u0131 s\u0131ra \u00f6rneklem b\u00fcy\u00fckl\u00fc\u011f\u00fc ve etki b\u00fcy\u00fckl\u00fc\u011f\u00fcne ba\u011fl\u0131d\u0131r ve \u00e7al\u0131\u015fma tasar\u0131m\u0131 ve ara\u015ft\u0131rma sorusu ba\u011flam\u0131nda yorumlanmal\u0131d\u0131r.<\/p>\n\n\n\n

Hipotez Testi i\u00e7in G\u00fc\u00e7 Analizi<\/strong><\/h2>\n\n\n\n

G\u00fc\u00e7 analizi, belirli bir etki b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc belirli bir g\u00fcven d\u00fczeyinde tespit etmek i\u00e7in gereken \u00f6rneklem b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc belirlemek amac\u0131yla hipotez testlerinde kullan\u0131lan istatistiksel bir y\u00f6ntemdir. \u0130statistiksel bir testin g\u00fcc\u00fc, yanl\u0131\u015f oldu\u011funda bo\u015f hipotezi do\u011fru bir \u015fekilde reddetme olas\u0131l\u0131\u011f\u0131 veya Tip II hatadan ka\u00e7\u0131nma olas\u0131l\u0131\u011f\u0131d\u0131r.<\/p>\n\n\n\n

G\u00fc\u00e7 analizi \u00f6nemlidir \u00e7\u00fcnk\u00fc ara\u015ft\u0131rmac\u0131lar\u0131n istenen g\u00fc\u00e7 seviyesine ula\u015fmak i\u00e7in gereken uygun \u00f6rneklem b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc belirlemelerine yard\u0131mc\u0131 olur. D\u00fc\u015f\u00fck g\u00fcce sahip bir \u00e7al\u0131\u015fma ger\u00e7ek bir etkiyi tespit edemeyerek Tip II hataya yol a\u00e7abilirken, y\u00fcksek g\u00fcce sahip bir \u00e7al\u0131\u015fman\u0131n ger\u00e7ek bir etkiyi tespit etme olas\u0131l\u0131\u011f\u0131 daha y\u00fcksektir ve bu da daha do\u011fru ve g\u00fcvenilir sonu\u00e7lara yol a\u00e7ar.<\/p>\n\n\n\n

Bir g\u00fc\u00e7 analizi yapmak i\u00e7in ara\u015ft\u0131rmac\u0131lar\u0131n istenen g\u00fc\u00e7 seviyesini, anlaml\u0131l\u0131k seviyesini, etki b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc ve \u00f6rneklem b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc belirlemeleri gerekir. Etki b\u00fcy\u00fckl\u00fc\u011f\u00fc, incelenen de\u011fi\u015fkenler aras\u0131ndaki fark\u0131n veya ili\u015fkinin b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fcn bir \u00f6l\u00e7\u00fcs\u00fcd\u00fcr ve genellikle \u00f6nceki ara\u015ft\u0131rmalardan veya pilot \u00e7al\u0131\u015fmalardan tahmin edilir. G\u00fc\u00e7 analizi daha sonra istenen g\u00fc\u00e7 seviyesine ula\u015fmak i\u00e7in gereken \u00f6rneklem b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc belirleyebilir.<\/p>\n\n\n\n

G\u00fc\u00e7 analizi, \u00f6rneklem b\u00fcy\u00fckl\u00fc\u011f\u00fc, etki b\u00fcy\u00fckl\u00fc\u011f\u00fc ve anlaml\u0131l\u0131k d\u00fczeyine ba\u011fl\u0131 olarak tamamlanm\u0131\u015f bir \u00e7al\u0131\u015fman\u0131n g\u00fcc\u00fcn\u00fc belirlemek i\u00e7in geriye d\u00f6n\u00fck olarak da kullan\u0131labilir. Bu, ara\u015ft\u0131rmac\u0131lar\u0131n vard\u0131klar\u0131 sonu\u00e7lar\u0131n g\u00fcc\u00fcn\u00fc de\u011ferlendirmelerine ve ek ara\u015ft\u0131rma gerekip gerekmedi\u011fini belirlemelerine yard\u0131mc\u0131 olabilir.<\/p>\n\n\n\n

Genel olarak g\u00fc\u00e7 analizi, ara\u015ft\u0131rmac\u0131lar\u0131n ger\u00e7ek etkileri tespit etmek ve Tip II hatalardan ka\u00e7\u0131nmak i\u00e7in yeterli g\u00fcce sahip \u00e7al\u0131\u015fmalar tasarlamalar\u0131na yard\u0131mc\u0131 oldu\u011fundan hipotez testinde \u00f6nemli bir ara\u00e7t\u0131r<\/p>\n\n\n\n

Bayes Hipotez Testi<\/strong><\/h2>\n\n\n\n

Bayes hipotez testi, ara\u015ft\u0131rmac\u0131lar\u0131n her bir hipotez alt\u0131nda g\u00f6zlemlenen verilerin olas\u0131l\u0131\u011f\u0131na ve her bir hipotezin \u00f6nceki olas\u0131l\u0131\u011f\u0131na dayal\u0131 olarak rakip hipotezlerin lehine ve aleyhine olan kan\u0131tlar\u0131 de\u011ferlendirmelerine olanak tan\u0131yan istatistiksel bir y\u00f6ntemdir. P-de\u011ferlerine dayal\u0131 olarak bo\u015f hipotezleri reddetmeye odaklanan klasik hipotez testinin aksine Bayes hipotez testi, ara\u015ft\u0131rmac\u0131lar\u0131n her bir hipotezin lehine ve aleyhine olan kan\u0131tlar\u0131n g\u00fcc\u00fcn\u00fc \u00f6l\u00e7mesine olanak tan\u0131yarak hipotez testine daha incelikli ve bilgilendirici bir yakla\u015f\u0131m sa\u011flar.<\/p>\n\n\n\n

Bayes hipotez testinde ara\u015ft\u0131rmac\u0131lar, mevcut bilgi veya inan\u00e7lara dayal\u0131 olarak her hipotez i\u00e7in bir \u00f6nceki olas\u0131l\u0131k da\u011f\u0131l\u0131m\u0131yla ba\u015flar. Daha sonra Bayes teoremini kullanarak her bir hipotez alt\u0131nda g\u00f6zlemlenen verilerin olas\u0131l\u0131\u011f\u0131na dayal\u0131 olarak \u00f6nceki olas\u0131l\u0131k da\u011f\u0131l\u0131m\u0131n\u0131 g\u00fcncellerler. Ortaya \u00e7\u0131kan son olas\u0131l\u0131k da\u011f\u0131l\u0131m\u0131, g\u00f6zlemlenen veriler g\u00f6z \u00f6n\u00fcne al\u0131nd\u0131\u011f\u0131nda her bir hipotezin olas\u0131l\u0131\u011f\u0131n\u0131 temsil eder.<\/p>\n\n\n\n

Bir hipotezin di\u011ferine kar\u015f\u0131 kan\u0131t g\u00fcc\u00fc, Bayes fakt\u00f6r\u00fc hesaplanarak \u00f6l\u00e7\u00fclebilir; bu fakt\u00f6r, bir hipotez alt\u0131nda g\u00f6zlemlenen verilerin olas\u0131l\u0131\u011f\u0131n\u0131n, \u00f6nceki olas\u0131l\u0131klar\u0131na g\u00f6re a\u011f\u0131rl\u0131kland\u0131r\u0131lm\u0131\u015f di\u011ferine oran\u0131d\u0131r. Bayes fakt\u00f6r\u00fcn\u00fcn 1'den b\u00fcy\u00fck olmas\u0131 bir hipotez lehine kan\u0131t oldu\u011funu g\u00f6sterirken, Bayes fakt\u00f6r\u00fcn\u00fcn 1'den k\u00fc\u00e7\u00fck olmas\u0131 di\u011fer hipotez lehine kan\u0131t oldu\u011funu g\u00f6sterir.<\/p>\n\n\n\n

Bayes hipotez testinin klasik hipotez testine g\u00f6re \u00e7e\u015fitli avantajlar\u0131 vard\u0131r. \u0130lk olarak, ara\u015ft\u0131rmac\u0131lar\u0131n g\u00f6zlemlenen verilere dayanarak \u00f6nceki inan\u00e7lar\u0131n\u0131 g\u00fcncellemelerine olanak tan\u0131r, bu da daha do\u011fru ve g\u00fcvenilir sonu\u00e7lara yol a\u00e7abilir. \u0130kinci olarak, yaln\u0131zca g\u00f6zlemlenen verilerin \u00f6nceden belirlenmi\u015f bir d\u00fczeyde istatistiksel olarak anlaml\u0131 olup olmad\u0131\u011f\u0131n\u0131 g\u00f6steren p-de\u011ferlerinden daha bilgilendirici bir kan\u0131t \u00f6l\u00e7\u00fcs\u00fc sa\u011flar. Son olarak, klasik y\u00f6ntemlerle analiz edilmesi zor olabilecek birden fazla parametre ve hipotez i\u00e7eren karma\u015f\u0131k modelleri bar\u0131nd\u0131rabilir.<\/p>\n\n\n\n

Genel olarak, Bayesian hipotez testi, ara\u015ft\u0131rmac\u0131lar\u0131n daha bilin\u00e7li kararlar almalar\u0131na ve verilerinden daha do\u011fru sonu\u00e7lar \u00e7\u0131karmalar\u0131na yard\u0131mc\u0131 olabilecek g\u00fc\u00e7l\u00fc ve esnek bir istatistiksel y\u00f6ntemdir.<\/p>\n\n\n\n

Dakikalar \u0130\u00e7inde Bilimsel Olarak Do\u011fru \u0130nfografikler Olu\u015fturun<\/strong><\/h2>\n\n\n\n

Mind the Graph<\/a> platformu, bilim insanlar\u0131n\u0131n bilimsel a\u00e7\u0131dan do\u011fru infografikleri kolay bir \u015fekilde olu\u015fturmalar\u0131na yard\u0131mc\u0131 olan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Sezgisel aray\u00fcz\u00fc, \u00f6zelle\u015ftirilebilir \u015fablonlar\u0131 ve kapsaml\u0131 bilimsel ill\u00fcstrasyon ve ikon k\u00fct\u00fcphanesi ile Mind the Graph, ara\u015ft\u0131rmac\u0131lar\u0131n bulgular\u0131n\u0131 daha geni\u015f bir kitleye etkili bir \u015fekilde ileten profesyonel g\u00f6r\u00fcn\u00fcml\u00fc grafikler olu\u015fturmas\u0131n\u0131 kolayla\u015ft\u0131r\u0131r.<\/p>\n\n\n\n

<\/div>\n\n\n
\n
\"\"<\/a><\/figure><\/div>\n\n\n
<\/div>","protected":false},"excerpt":{"rendered":"

Hipotez testleri hakk\u0131nda bilgi edinin. Test t\u00fcrleri, yayg\u0131n hatalar, en iyi uygulamalar ve daha fazlas\u0131. T\u00fcm ara\u015ft\u0131rmac\u0131lar i\u00e7in m\u00fckemmel.<\/p>","protected":false},"author":35,"featured_media":29081,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[978,974,961],"tags":[],"yoast_head":"\nHypothesis Testing: Principles and Methods<\/title>\n<meta name=\"description\" content=\"Learn about hypothesis testing. The types of tests, common errors, best practices, and more. 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