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Yıl:2016; Cilt: 6; Sayı: 1>> Özet
TAM METİN
Journal of Mood Disorders; 2016;6(1):47-48
Cronbach’ın alfa güvenirlik katsayısı
S Kılıç
Gülhane Askeri Tıp Fakültesi, Ankara
İstatistikte Cronbach’ın alfa (α) katsayısı psikometrik bir testin güvenilirliğinin kestiriminde kullanılır. Her bir madde için saptanan tek bir α değeri olabileceği gibi, ölçekteki tüm maddelere ait ortalama bir α değeri de hesaplanabilir. Katsayının 0.7 ve üstü bulunması durumunda ölçeğin güvenirliği iyi olarak kabul edilir. Diğer yandan hesaplanan düşük α değerinin ölçekte yer alan madde sayısının az olmasına, hesaplanan katsayı 0.9’un üzerinde olduğunda da ölçekte gereksiz soru olabileceği göz önüne alınmalıdır
Cronbach’s alpha reliability coefficient
In statistics, Cronbach’s alpha coefficient is used as an estimate of the reliability of a psychometric test. It might have calculated either for each item in the scale or an average value for all items in the scale. The reliability of the scale is accepted as good if the coefficient is found equal or greater than 0.70. On the other hand, the results should be considered whether if a low value of alpha that could be due to a low number of questions in the scale and a high valuec of alpha (>0.90) may suggest redundant items in the scale.

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