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The Pareto distribution was derived based on the observation of Vilfredo Pareto that in Italy $80\%$ share of land belonged to $20\%$ of the country’s population, and he showed this held for many other countries as well (see Pareto Manual of political economy - the book is still being reprinted). Consequently, based on this empirical observation it was ...


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The GINI has fairly standardized calculation so you can just follow the standard formulas. The GINI is the ratio of the grey area on the plot below (taken from wikipedia - which also mentions the formulas below) to the total area. Hence if you already have data where these areas are calculated you can simply compute GINI as: $$GINI= \frac{A}{A+B}$$ If you ...


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