Intriguing yet simple skewness - kurtosis relation in economic and demographic data distributions, pointing to preferential attachment processes
In this paper, we propose that relations between high-order
moments of data distributions, for example, between the skewness
(S) and kurtosis (K), allow to point to theoretical models with understandable
structural parameters. The illustrative data concern two
cases: (i) the distribution of income taxes and (ii) that of inhabitants,
after aggregation over each city in each province of Italy in 2011.
Moreover, from the rank-size relationship, for either S or K, in both
cases, it is shown that one obtains the parameters of the underlying