In the literature, several continuous univariate distributions have been extensively used for modeling data in many areas such as economics, engineering, biological studies and environmental sciences. However, applied areas such as …nance, lifetime analysis and insurance clearly require extended forms of these distributions. So, several classes of distributions have been constructed by extending common families of continuous distributions. These generalized distributions give more ‡exibility by adding one "or more" parameters to the baseline model. They were pioneered by Gupta et al. (1998) who proposed the exponentiated-G class, which consists of raising the cumulative distribution function (cdf) to a positive power parameter. Many other classes can be cited such as the Marshall-Olkin-G family by Marshall and Olkin (1997), beta generalized-G family by Eugene et al. (2002), exponentiated generalized-G family by Cordeiro et al. (2013), a new method for generating families of continuous distributions by Alzaatreh et al. (2013), transmuted exponentiated generalized-G by Yousof et al. (2015), exponentiated transmuted-G by Merovc et al. (2016), Burr X-G by Yousof et al. (2016), transmuted Weibull G family by Alizadeh et al. (2016), complementary generalized transmuted Poisson-G family by Alizadeh et al. (2016b), transmuted geometric-G by A…fy et al. (2016a), complementary geometric transmuted-G family A…fy et al. (2016b), Kumaraswamy transmuted-G by A…fy et al. (2016c), exponentiated generalized-G Poisson by Aryal and Yousof (2017), Marshall-Olkin generalized family by Yousof et al. (2017a), beta Weibull-G family of distributions by Yousof et al. (2017b), Type I general exponential class of distributions by Hamedani et al. (2017), Topp-Leone odd log-logistic family by de Brito et al. (2017), generalized odd generalized exponential family by Alizadeh et al. (2017), exponentiated Weibull-H family Cordeiro et al. (2017a), generalized transmuted-G by Nofal et al. (2017), Burr XII system of densities by Cordeiro et al. (2017b) and beta transmuted-H family by A…fy et al. (2017), among others.