The p coefficient is used because it moves in the same direction as inequality and has more intuitive economic appeal than the standard Pareto coefficient a, which moves in the opposite direction to inequality (Alvaredo and Piketty, 2014). Therefore, if p is equal to 2, the average income of individuals with income above 100,000 currency units is 200,000 units, if p is equal to 3, the average income is 300,000 units. A look at all the countries in the World Top Incomes Database (WTID) reveals that p coefficients vary between 1.5 and 3.