(Answered) calculate the Gini coefficient for country Acalculate the Gini coefficient for country A

➤ Can I calculate Gini for Country A from grouped (decile) data?
Yes. With deciles or percentile income shares for Country A, use cumulative population and income shares to approximate the Lorenz curve. Connect adjacent points linearly and compute area with the trapezoid rule. This yields an approximate Gini; accuracy improves with finer groups. Grouped data may understate inequality compared with microdata.