In this work we introduce the Beta Pareto Geometric (BPG)
distribution because of the wide usage of the Pareto geometric
distribution and the fact that the current generalization provides
means of its continuous extension to still more complex
situations. We have derived various properties of the beta Pareto
geometric distributions, including the moment generating
function and the rth generalized moment. Discussion of the
estimation procedure by maximum likelihood has been introduced
followed by the Fisher information matrix. Finally, we
demonstrate an application to real data. In conclusion, the
Q-exponential distributions play an important role in nonextensive statistics. They appear as the canonical distributions, i.e. the maximum generalized q-entropy distributions under mean constraint. Their relevance is also independently justified by their appearance in the theory of superstatistics introduced by Beck and Cohen. In this paper, we provide a third and independent rationale for these distributions. We indicate that q-exponentials are stable by a statistical normalization operation, and that Pickands’ extreme values theorem plays the role of a CLT-like theorem in this context. This suggests that q-exponentials can arise in many contexts if the system at hand or the measurement device introduces some threshold. Moreover we give an asymptotic connection between excess distributions and maximum q-entropy. We also highlight the role of Generalized Pareto Distributions in many applications and present several methods for the practical estimation of q-exponential parameters.