Alpha Power-Kumaraswamy Distribution with An Application on Survival Times of Cancer Patients

Fatima Ulubekova (Department of Statistics, Hacettepe University Ankara, Turkey)
Gamze Ozel (Department of Statistics, Hacettepe University Ankara, Turkey)


The aim of the study is to obtain the alpha power Kumaraswamy (APK) distribution. Some main statistical properties of the APK distribution are investigated including survival, hazard rate and quantile functions, skewness, kurtosis, order statistics. The hazard rate function of the proposed distribution could be useful to model data sets with bathtub hazard rates. We provide a real data application and show that the APK distribution is better than the other compared distributions fort the right-skewed data sets.


Alpha power transformation;Maximum likelihood estimation

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