4.3. Income distribution and distributional effects
The calculation of the coefficient of variation (CV) in incomeswithin the two groups of households shows, in a first approach, abroader income distribution spread among the REM-MPA house-holds group which presents a CV value of 1.64 vs. a CV value of 1.38for the subset of WA-MPA households. In order to confirm this, wecalculate the value of the Gini G* coefficients (Eq. (1)) separatelyfor each of the two groups. The results reveal less income inequal-ity among WA-MPA households (G* = 0.595) than among REM-MPA(G* = 0.677).
Computation of the Herfindahl-based index IH(Eq. (2)) confirmsa smaller income spread for WA-MPA households (IH= 2.52%) thanfor REM-MPA households (IH= 3.01%).
For each of the two groups (WA-MPA households vs. REM-MPAhouseholds), analysis of the Lorenz curve (Fig. 3) confirms themarked difference between the two distributions with, in partic-ular, many negative incomes in the lower part of the distributionfor the REM-MPA households.