İstatistiksel Güç Bir Araştırmanın Sonuçlarına Etki Eder Mi? Örneklem Büyüklüğüne Nasıl Karar Verilmeli?
Öz
İstatistiksel güç analizi; güvenilirliği, geçerliliği yüksek bir araştırma planlamayı ve araştırma sonucunda alınacak kararların geçerliliğini, güvenilirliğini ve duyarlılığını garanti altına almayı sağlayan bir yöntemdir. İstatistiksel güç, araştırmada bir hipotezin denetlenmesi için kullanılan istatistiksel testler sonucunda varılan kararın ne kadar güvenilir ve geçerli olduğunu olasılık olarak tahmin eden bir yaklaşımdır. Güç analizi, diğer istatistiksel yaklaşımlardan önemli ölçüde farklıdır. Birçok istatistiksel analiz mevcut veri ile analize başlamakta ve sonuçların yorumuna odaklanmaktadır. Hâlbuki güç analizi daha çok veri toplama öncesinde anlamlıdır ve hipotez kurma sürecinde önemlidir. Bu bağlamda çalışmanın amacı, sosyal bilim çalışmalarında istatistiksel güç analizinin ne olduğu konusunda farkındalık oluşturarak araştırmalara katkı sağlamak ve bir araştırmada istatistiksel güç analizinin nasıl kullanılacağı konusunda araştırmacılara rehberlik etmektir.
Anahtar Kelimeler
İstatistiksel Güç, İstatistiksel Güç Analizi, Etki Büyüklüğü
Kaynakça
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